# Enumerable.AverageEnumerable.AverageEnumerable.AverageEnumerable.Average Method

## 정의

숫자 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of numeric values.

## 오버로드

 Average(IEnumerable) Average(IEnumerable) Average(IEnumerable) Average(IEnumerable) Single 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Single values. Average(IEnumerable>) Average(IEnumerable>) Average(IEnumerable>) Average(IEnumerable>) nullable Single 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Single values. Average(IEnumerable>) Average(IEnumerable>) Average(IEnumerable>) Average(IEnumerable>) nullable Int64 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Int64 values. Average(IEnumerable>) Average(IEnumerable>) Average(IEnumerable>) Average(IEnumerable>) nullable Int32 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Int32 values. Average(IEnumerable>) Average(IEnumerable>) Average(IEnumerable>) Average(IEnumerable>) nullable Double 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Double values. Average(IEnumerable) Average(IEnumerable) Average(IEnumerable) Average(IEnumerable) Int64 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Int64 values. Average(IEnumerable) Average(IEnumerable) Average(IEnumerable) Average(IEnumerable) Int32 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Int32 values. Average(IEnumerable) Average(IEnumerable) Average(IEnumerable) Average(IEnumerable) Double 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Double values. Average(IEnumerable) Average(IEnumerable) Average(IEnumerable) Average(IEnumerable) Decimal 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Decimal values. Average(IEnumerable>) Average(IEnumerable>) Average(IEnumerable>) Average(IEnumerable>) nullable Decimal 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Decimal values. Average(IEnumerable, Func>) Average(IEnumerable, Func>) Average(IEnumerable, Func>) Average(IEnumerable, Func>) 입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 nullable Int32 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence. Average(IEnumerable, Func) Average(IEnumerable, Func) Average(IEnumerable, Func) Average(IEnumerable, Func) 입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 Single 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Single values that are obtained by invoking a transform function on each element of the input sequence. Average(IEnumerable, Func>) Average(IEnumerable, Func>) Average(IEnumerable, Func>) Average(IEnumerable, Func>) 입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 nullable Single 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence. Average(IEnumerable, Func>) Average(IEnumerable, Func>) Average(IEnumerable, Func>) Average(IEnumerable, Func>) 입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 nullable Int64 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence. Average(IEnumerable, Func>) Average(IEnumerable, Func>) Average(IEnumerable, Func>) Average(IEnumerable, Func>) 입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 nullable Double 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence. Average(IEnumerable, Func>) Average(IEnumerable, Func>) Average(IEnumerable, Func>) Average(IEnumerable, Func>) 입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 nullable Decimal 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Decimal values that are obtained by invoking a transform function on each element of the input sequence. Average(IEnumerable, Func) Average(IEnumerable, Func) Average(IEnumerable, Func) Average(IEnumerable, Func) 입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 Int64 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence. Average(IEnumerable, Func) Average(IEnumerable, Func) Average(IEnumerable, Func) Average(IEnumerable, Func) 입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 Int32 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence. Average(IEnumerable, Func) Average(IEnumerable, Func) Average(IEnumerable, Func) Average(IEnumerable, Func) 입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 Double 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Double values that are obtained by invoking a transform function on each element of the input sequence. Average(IEnumerable, Func) Average(IEnumerable, Func) Average(IEnumerable, Func) Average(IEnumerable, Func) 입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 Decimal 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.

## Average(IEnumerable<Single>)Average(IEnumerable<Single>)Average(IEnumerable<Single>)Average(IEnumerable<Single>)

Single 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Single values.

``````public:
[System::Runtime::CompilerServices::Extension]
static float Average(System::Collections::Generic::IEnumerable<float> ^ source);``````
``public static float Average (this System.Collections.Generic.IEnumerable<float> source);``
``static member Average : seq<single> -> single``
``````<Extension()>
Public Function Average (source As IEnumerable(Of Single)) As Single``````

#### 매개 변수

source

평균을 계산할 Single 값의 시퀀스입니다.A sequence of Single values to calculate the average of.

#### 반환

값 시퀀스의 평균입니다.The average of the sequence of values.

#### 예외

`source``null`인 경우`source` is `null`.

`source`에 요소가 없는 경우`source` contains no elements.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average(IEnumerable<Int32>) 평균을 계산 합니다.The following code example demonstrates how to use Average(IEnumerable<Int32>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 소스 시퀀스의 요소를 적절한 숫자 형식의 요소로 대체하십시오.To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

``````List<int> grades = new List<int> { 78, 92, 100, 37, 81 };

Console.WriteLine("The average grade is {0}.", average);

// This code produces the following output:
//
// The average grade is 77.6.
``````
``````' Create a list of integers.
Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

' Determine the average value in the list.
Dim avg As Double = grades.Average()

' Display the output.
MsgBox("The average grade is " & avg)

' This code produces the following output:
'
' The average grade is 77.6
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average(IEnumerable<Nullable<Single>>)Average(IEnumerable<Nullable<Single>>)Average(IEnumerable<Nullable<Single>>)Average(IEnumerable<Nullable<Single>>)

nullable Single 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Single values.

``````public:
[System::Runtime::CompilerServices::Extension]
static Nullable<float> Average(System::Collections::Generic::IEnumerable<Nullable<float>> ^ source);``````
``public static Nullable<float> Average (this System.Collections.Generic.IEnumerable<Nullable<float>> source);``
``static member Average : seq<Nullable<single>> -> Nullable<single>``
``````<Extension()>
Public Function Average (source As IEnumerable(Of Nullable(Of Single))) As Nullable(Of Single)``````

#### 매개 변수

source

평균을 계산할 nullable Single 값 시퀀스입니다.A sequence of nullable Single values to calculate the average of.

#### 반환

값 시퀀스의 평균이거나 소스 시퀀스가 비어 있거나 `null` 값만 포함하는 경우 `null`입니다.The average of the sequence of values, or `null` if the source sequence is empty or contains only values that are `null`.

#### 예외

`source``null`입니다.`source` is `null`.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average(IEnumerable<Nullable<Int64>>) 평균을 계산 합니다.The following code example demonstrates how to use Average(IEnumerable<Nullable<Int64>>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 소스 시퀀스의 요소를 적절한 숫자 형식의 요소로 대체하십시오.To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

``````long?[] longs = { null, 10007L, 37L, 399846234235L };

double? average = longs.Average();

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 133282081426.333.
``````
``````' Create an array of nullable long values.
Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

' Determine the average value in the array.
Dim avg As Nullable(Of Double) = longs.Average()

' Display the output.
MsgBox("The average is " & avg.ToString)

' This code produces the following output:
'
' The average is 133282081426.333
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average(IEnumerable<Nullable<Int64>>)Average(IEnumerable<Nullable<Int64>>)Average(IEnumerable<Nullable<Int64>>)Average(IEnumerable<Nullable<Int64>>)

nullable Int64 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Int64 values.

``````public:
[System::Runtime::CompilerServices::Extension]
static Nullable<double> Average(System::Collections::Generic::IEnumerable<Nullable<long>> ^ source);``````
``public static Nullable<double> Average (this System.Collections.Generic.IEnumerable<Nullable<long>> source);``
``static member Average : seq<Nullable<int64>> -> Nullable<double>``
``````<Extension()>
Public Function Average (source As IEnumerable(Of Nullable(Of Long))) As Nullable(Of Double)``````

#### 매개 변수

source

평균을 계산할 nullable Int64 값 시퀀스입니다.A sequence of nullable Int64 values to calculate the average of.

#### 반환

값 시퀀스의 평균이거나 소스 시퀀스가 비어 있거나 `null` 값만 포함하는 경우 `null`입니다.The average of the sequence of values, or `null` if the source sequence is empty or contains only values that are `null`.

#### 예외

`source``null`입니다.`source` is `null`.

시퀀스의 요소 합이 MaxValue보다 큰 경우The sum of the elements in the sequence is larger than MaxValue.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average(IEnumerable<Nullable<Int64>>) 평균을 계산 합니다.The following code example demonstrates how to use Average(IEnumerable<Nullable<Int64>>) to calculate an average.

``````long?[] longs = { null, 10007L, 37L, 399846234235L };

double? average = longs.Average();

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 133282081426.333.
``````
``````' Create an array of nullable long values.
Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

' Determine the average value in the array.
Dim avg As Nullable(Of Double) = longs.Average()

' Display the output.
MsgBox("The average is " & avg.ToString)

' This code produces the following output:
'
' The average is 133282081426.333
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average(IEnumerable<Nullable<Int32>>)Average(IEnumerable<Nullable<Int32>>)Average(IEnumerable<Nullable<Int32>>)Average(IEnumerable<Nullable<Int32>>)

nullable Int32 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Int32 values.

``````public:
[System::Runtime::CompilerServices::Extension]
static Nullable<double> Average(System::Collections::Generic::IEnumerable<Nullable<int>> ^ source);``````
``public static Nullable<double> Average (this System.Collections.Generic.IEnumerable<Nullable<int>> source);``
``static member Average : seq<Nullable<int>> -> Nullable<double>``
``````<Extension()>
Public Function Average (source As IEnumerable(Of Nullable(Of Integer))) As Nullable(Of Double)``````

#### 매개 변수

source

평균을 계산할 nullable Int32 값 시퀀스입니다.A sequence of nullable Int32 values to calculate the average of.

#### 반환

값 시퀀스의 평균이거나 소스 시퀀스가 비어 있거나 `null` 값만 포함하는 경우 `null`입니다.The average of the sequence of values, or `null` if the source sequence is empty or contains only values that are `null`.

#### 예외

`source``null`인 경우`source` is `null`.

시퀀스의 요소 합이 MaxValue보다 큰 경우The sum of the elements in the sequence is larger than MaxValue.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average(IEnumerable<Nullable<Int64>>) 평균을 계산 합니다.The following code example demonstrates how to use Average(IEnumerable<Nullable<Int64>>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 소스 시퀀스의 요소를 적절한 숫자 형식의 요소로 대체하십시오.To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

``````long?[] longs = { null, 10007L, 37L, 399846234235L };

double? average = longs.Average();

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 133282081426.333.
``````
``````' Create an array of nullable long values.
Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

' Determine the average value in the array.
Dim avg As Nullable(Of Double) = longs.Average()

' Display the output.
MsgBox("The average is " & avg.ToString)

' This code produces the following output:
'
' The average is 133282081426.333
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average(IEnumerable<Nullable<Double>>)Average(IEnumerable<Nullable<Double>>)Average(IEnumerable<Nullable<Double>>)Average(IEnumerable<Nullable<Double>>)

nullable Double 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Double values.

``````public:
[System::Runtime::CompilerServices::Extension]
static Nullable<double> Average(System::Collections::Generic::IEnumerable<Nullable<double>> ^ source);``````
``public static Nullable<double> Average (this System.Collections.Generic.IEnumerable<Nullable<double>> source);``
``static member Average : seq<Nullable<double>> -> Nullable<double>``
``````<Extension()>
Public Function Average (source As IEnumerable(Of Nullable(Of Double))) As Nullable(Of Double)``````

#### 매개 변수

source

평균을 계산할 nullable Double 값 시퀀스입니다.A sequence of nullable Double values to calculate the average of.

#### 반환

값 시퀀스의 평균이거나 소스 시퀀스가 비어 있거나 `null` 값만 포함하는 경우 `null`입니다.The average of the sequence of values, or `null` if the source sequence is empty or contains only values that are `null`.

#### 예외

`source``null`인 경우`source` is `null`.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average(IEnumerable<Nullable<Int64>>) 평균을 계산 합니다.The following code example demonstrates how to use Average(IEnumerable<Nullable<Int64>>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 소스 시퀀스의 요소를 적절한 숫자 형식의 요소로 대체하십시오.To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

``````long?[] longs = { null, 10007L, 37L, 399846234235L };

double? average = longs.Average();

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 133282081426.333.
``````
``````' Create an array of nullable long values.
Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

' Determine the average value in the array.
Dim avg As Nullable(Of Double) = longs.Average()

' Display the output.
MsgBox("The average is " & avg.ToString)

' This code produces the following output:
'
' The average is 133282081426.333
``````

### 설명

요소의 합 너무 크면로 나타낼 수는 Double,이 메서드는 양 또는 음의 무한대를 반환 합니다.If the sum of the elements is too large to represent as a Double, this method returns positive or negative infinity.

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average(IEnumerable<Int64>)Average(IEnumerable<Int64>)Average(IEnumerable<Int64>)Average(IEnumerable<Int64>)

Int64 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Int64 values.

``````public:
[System::Runtime::CompilerServices::Extension]
static double Average(System::Collections::Generic::IEnumerable<long> ^ source);``````
``public static double Average (this System.Collections.Generic.IEnumerable<long> source);``
``static member Average : seq<int64> -> double``
``````<Extension()>
Public Function Average (source As IEnumerable(Of Long)) As Double``````

#### 매개 변수

source

평균을 계산할 Int64 값의 시퀀스입니다.A sequence of Int64 values to calculate the average of.

#### 반환

값 시퀀스의 평균입니다.The average of the sequence of values.

#### 예외

`source``null`입니다.`source` is `null`.

`source`에 요소가 없는 경우`source` contains no elements.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average(IEnumerable<Int32>) 평균을 계산 합니다.The following code example demonstrates how to use Average(IEnumerable<Int32>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 소스 시퀀스의 요소를 적절한 숫자 형식의 요소로 대체하십시오.To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

``````List<int> grades = new List<int> { 78, 92, 100, 37, 81 };

Console.WriteLine("The average grade is {0}.", average);

// This code produces the following output:
//
// The average grade is 77.6.
``````
``````' Create a list of integers.
Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

' Determine the average value in the list.
Dim avg As Double = grades.Average()

' Display the output.
MsgBox("The average grade is " & avg)

' This code produces the following output:
'
' The average grade is 77.6
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average(IEnumerable<Int32>)Average(IEnumerable<Int32>)Average(IEnumerable<Int32>)Average(IEnumerable<Int32>)

Int32 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Int32 values.

``````public:
[System::Runtime::CompilerServices::Extension]
static double Average(System::Collections::Generic::IEnumerable<int> ^ source);``````
``public static double Average (this System.Collections.Generic.IEnumerable<int> source);``
``static member Average : seq<int> -> double``
``````<Extension()>
Public Function Average (source As IEnumerable(Of Integer)) As Double``````

#### 매개 변수

source

평균을 계산할 Int32 값의 시퀀스입니다.A sequence of Int32 values to calculate the average of.

#### 반환

값 시퀀스의 평균입니다.The average of the sequence of values.

#### 예외

`source``null`인 경우`source` is `null`.

`source`에 요소가 없는 경우`source` contains no elements.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average(IEnumerable<Int32>) 평균을 계산 합니다.The following code example demonstrates how to use Average(IEnumerable<Int32>) to calculate an average.

``````List<int> grades = new List<int> { 78, 92, 100, 37, 81 };

Console.WriteLine("The average grade is {0}.", average);

// This code produces the following output:
//
// The average grade is 77.6.
``````
``````' Create a list of integers.
Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

' Determine the average value in the list.
Dim avg As Double = grades.Average()

' Display the output.
MsgBox("The average grade is " & avg)

' This code produces the following output:
'
' The average grade is 77.6
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average(IEnumerable<Double>)Average(IEnumerable<Double>)Average(IEnumerable<Double>)Average(IEnumerable<Double>)

Double 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Double values.

``````public:
[System::Runtime::CompilerServices::Extension]
static double Average(System::Collections::Generic::IEnumerable<double> ^ source);``````
``public static double Average (this System.Collections.Generic.IEnumerable<double> source);``
``static member Average : seq<double> -> double``
``````<Extension()>
Public Function Average (source As IEnumerable(Of Double)) As Double``````

#### 매개 변수

source

평균을 계산할 Double 값의 시퀀스입니다.A sequence of Double values to calculate the average of.

#### 반환

값 시퀀스의 평균입니다.The average of the sequence of values.

#### 예외

`source``null`인 경우`source` is `null`.

`source`에 요소가 없는 경우`source` contains no elements.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average(IEnumerable<Int32>) 평균을 계산 합니다.The following code example demonstrates how to use Average(IEnumerable<Int32>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 소스 시퀀스의 요소를 적절한 숫자 형식의 요소로 대체하십시오.To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

``````List<int> grades = new List<int> { 78, 92, 100, 37, 81 };

Console.WriteLine("The average grade is {0}.", average);

// This code produces the following output:
//
// The average grade is 77.6.
``````
``````' Create a list of integers.
Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

' Determine the average value in the list.
Dim avg As Double = grades.Average()

' Display the output.
MsgBox("The average grade is " & avg)

' This code produces the following output:
'
' The average grade is 77.6
``````

### 설명

요소의 합 너무 크면로 나타낼 수는 Double,이 메서드는 양 또는 음의 무한대를 반환 합니다.If the sum of the elements is too large to represent as a Double, this method returns positive or negative infinity.

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average(IEnumerable<Decimal>)Average(IEnumerable<Decimal>)Average(IEnumerable<Decimal>)Average(IEnumerable<Decimal>)

Decimal 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Decimal values.

``````public:
[System::Runtime::CompilerServices::Extension]
static System::Decimal Average(System::Collections::Generic::IEnumerable<System::Decimal> ^ source);``````
``public static decimal Average (this System.Collections.Generic.IEnumerable<decimal> source);``
``static member Average : seq<decimal> -> decimal``
``````<Extension()>
Public Function Average (source As IEnumerable(Of Decimal)) As Decimal``````

#### 매개 변수

source

평균을 계산할 Decimal 값의 시퀀스입니다.A sequence of Decimal values to calculate the average of.

#### 반환

값 시퀀스의 평균입니다.The average of the sequence of values.

#### 예외

`source``null`인 경우`source` is `null`.

`source`에 요소가 없는 경우`source` contains no elements.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average(IEnumerable<Int32>) 값 시퀀스의 평균을 계산할 수 있습니다.The following code example demonstrates how to use Average(IEnumerable<Int32>) to calculate the average of a sequence of values.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 소스 시퀀스의 요소를 적절한 숫자 형식의 요소로 대체하십시오.To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

``````List<int> grades = new List<int> { 78, 92, 100, 37, 81 };

Console.WriteLine("The average grade is {0}.", average);

// This code produces the following output:
//
// The average grade is 77.6.
``````
``````' Create a list of integers.
Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

' Determine the average value in the list.
Dim avg As Double = grades.Average()

' Display the output.
MsgBox("The average grade is " & avg)

' This code produces the following output:
'
' The average grade is 77.6
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average(IEnumerable<Nullable<Decimal>>)Average(IEnumerable<Nullable<Decimal>>)Average(IEnumerable<Nullable<Decimal>>)Average(IEnumerable<Nullable<Decimal>>)

nullable Decimal 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Decimal values.

``````public:
[System::Runtime::CompilerServices::Extension]
static Nullable<System::Decimal> Average(System::Collections::Generic::IEnumerable<Nullable<System::Decimal>> ^ source);``````
``public static Nullable<decimal> Average (this System.Collections.Generic.IEnumerable<Nullable<decimal>> source);``
``static member Average : seq<Nullable<decimal>> -> Nullable<decimal>``
``````<Extension()>
Public Function Average (source As IEnumerable(Of Nullable(Of Decimal))) As Nullable(Of Decimal)``````

#### 매개 변수

source

평균을 계산할 nullable Decimal 값 시퀀스입니다.A sequence of nullable Decimal values to calculate the average of.

#### 반환

값 시퀀스의 평균이거나 소스 시퀀스가 비어 있거나 `null` 값만 포함하는 경우 `null`입니다.The average of the sequence of values, or `null` if the source sequence is empty or contains only values that are `null`.

#### 예외

`source``null`인 경우`source` is `null`.

시퀀스의 요소 합이 MaxValue보다 큰 경우The sum of the elements in the sequence is larger than MaxValue.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average(IEnumerable<Nullable<Int64>>) 평균을 계산 합니다.The following code example demonstrates how to use Average(IEnumerable<Nullable<Int64>>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 소스 시퀀스의 요소를 적절한 숫자 형식의 요소로 대체하십시오.To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

``````long?[] longs = { null, 10007L, 37L, 399846234235L };

double? average = longs.Average();

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 133282081426.333.
``````
``````' Create an array of nullable long values.
Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

' Determine the average value in the array.
Dim avg As Nullable(Of Double) = longs.Average()

' Display the output.
MsgBox("The average is " & avg.ToString)

' This code produces the following output:
'
' The average is 133282081426.333
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>)

입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 nullable Int32 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence.

``````public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
static Nullable<double> Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<int>> ^ selector);``````
``public static Nullable<double> Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<int>> selector);``
``static member Average : seq<'Source> * Func<'Source, Nullable<int>> -> Nullable<double>``
``````<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Integer))) As Nullable(Of Double)``````

#### 형식 매개 변수

TSource

`source` 요소의 형식입니다.The type of the elements of `source`.

#### 매개 변수

source
IEnumerable<TSource>

평균을 계산할 값의 시퀀스입니다.A sequence of values to calculate the average of.

selector
Func<TSource,Nullable<Int32>>

각 요소에 적용할 변환 함수입니다.A transform function to apply to each element.

#### 반환

값 시퀀스의 평균이거나 소스 시퀀스가 비어 있거나 `null` 값만 포함하는 경우 `null`입니다.The average of the sequence of values, or `null` if the source sequence is empty or contains only values that are `null`.

#### 예외

`source` 또는 `selector``null`인 경우`source` or `selector` is `null`.

시퀀스의 요소 합이 MaxValue보다 큰 경우The sum of the elements in the sequence is larger than MaxValue.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) 평균을 계산 합니다.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 `selector` 함수의 본문을 변경하세요.To extend the example to this topic, change the body of the `selector` function.

``````string[] fruits = { "apple", "banana", "mango", "orange", "passionfruit", "grape" };

double average = fruits.Average(s => s.Length);

Console.WriteLine("The average string length is {0}.", average);

// This code produces the following output:
//
// The average string length is 6.5.
``````
``````' Create an array of strings.
Dim fruits() As String =
{"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average length of the strings in the array.
Dim avg As Double = fruits.Average(Function(s) s.Length)

' Display the output.
MsgBox("The average string length is " & avg)

' This code produces the following output:
'
' The average string length is 6.5
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average<TSource>(IEnumerable<TSource>, Func<TSource,Single>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Single>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Single>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Single>)

입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 Single 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Single values that are obtained by invoking a transform function on each element of the input sequence.

``````public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
static float Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, float> ^ selector);``````
``public static float Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,float> selector);``
``static member Average : seq<'Source> * Func<'Source, single> -> single``
``````<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Single)) As Single``````

#### 형식 매개 변수

TSource

`source` 요소의 형식입니다.The type of the elements of `source`.

#### 매개 변수

source
IEnumerable<TSource>

평균을 계산할 값의 시퀀스입니다.A sequence of values to calculate the average of.

selector
Func<TSource,Single>

각 요소에 적용할 변환 함수입니다.A transform function to apply to each element.

#### 반환

값 시퀀스의 평균입니다.The average of the sequence of values.

#### 예외

`source` 또는 `selector``null`인 경우`source` or `selector` is `null`.

`source`에 요소가 없는 경우`source` contains no elements.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) 평균을 계산 합니다.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 `selector` 함수의 본문을 변경하세요.To extend the example to this topic, change the body of the `selector` function.

``````string[] fruits = { "apple", "banana", "mango", "orange", "passionfruit", "grape" };

double average = fruits.Average(s => s.Length);

Console.WriteLine("The average string length is {0}.", average);

// This code produces the following output:
//
// The average string length is 6.5.
``````
``````' Create an array of strings.
Dim fruits() As String =
{"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average length of the strings in the array.
Dim avg As Double = fruits.Average(Function(s) s.Length)

' Display the output.
MsgBox("The average string length is " & avg)

' This code produces the following output:
'
' The average string length is 6.5
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>)

입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 nullable Single 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence.

``````public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
static Nullable<float> Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<float>> ^ selector);``````
``public static Nullable<float> Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<float>> selector);``
``static member Average : seq<'Source> * Func<'Source, Nullable<single>> -> Nullable<single>``
``````<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Single))) As Nullable(Of Single)``````

#### 형식 매개 변수

TSource

`source` 요소의 형식입니다.The type of the elements of `source`.

#### 매개 변수

source
IEnumerable<TSource>

평균을 계산할 값의 시퀀스입니다.A sequence of values to calculate the average of.

selector
Func<TSource,Nullable<Single>>

각 요소에 적용할 변환 함수입니다.A transform function to apply to each element.

#### 반환

값 시퀀스의 평균이거나 소스 시퀀스가 비어 있거나 `null` 값만 포함하는 경우 `null`입니다.The average of the sequence of values, or `null` if the source sequence is empty or contains only values that are `null`.

#### 예외

`source` 또는 `selector``null`인 경우`source` or `selector` is `null`.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) 평균을 계산 합니다.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 `selector` 함수의 본문을 변경하세요.To extend the example to this topic, change the body of the `selector` function.

``````string[] fruits = { "apple", "banana", "mango", "orange", "passionfruit", "grape" };

double average = fruits.Average(s => s.Length);

Console.WriteLine("The average string length is {0}.", average);

// This code produces the following output:
//
// The average string length is 6.5.
``````
``````' Create an array of strings.
Dim fruits() As String =
{"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average length of the strings in the array.
Dim avg As Double = fruits.Average(Function(s) s.Length)

' Display the output.
MsgBox("The average string length is " & avg)

' This code produces the following output:
'
' The average string length is 6.5
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>)

입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 nullable Int64 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence.

``````public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
static Nullable<double> Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<long>> ^ selector);``````
``public static Nullable<double> Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<long>> selector);``
``static member Average : seq<'Source> * Func<'Source, Nullable<int64>> -> Nullable<double>``
``````<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Long))) As Nullable(Of Double)``````

#### 형식 매개 변수

TSource

`source` 요소의 형식입니다.The type of the elements of `source`.

#### 매개 변수

source
IEnumerable<TSource>

평균을 계산할 값의 시퀀스입니다.A sequence of values to calculate the average of.

selector
Func<TSource,Nullable<Int64>>

각 요소에 적용할 변환 함수입니다.A transform function to apply to each element.

#### 반환

값 시퀀스의 평균이거나 소스 시퀀스가 비어 있거나 `null` 값만 포함하는 경우 `null`입니다.The average of the sequence of values, or `null` if the source sequence is empty or contains only values that are `null`.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) 평균을 계산 합니다.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 `selector` 함수의 본문을 변경하세요.To extend the example to this topic, change the body of the `selector` function.

``````string[] numbers = { "10007", "37", "299846234235" };

double average = numbers.Average(num => Convert.ToInt64(num));

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 99948748093.
``````
``````' Create an array of strings.
Dim numbers() As String = {"10007", "37", "299846234235"}

' Determine the average number after converting each
' string to an Int64 value.
Dim avg As Double =
numbers.Average(Function(number) Convert.ToInt64(number))

' Display the output.
MsgBox("The average is " & avg)

' This code produces the following output:
'
' The average is 99948748093
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>)

입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 nullable Double 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence.

``````public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
static Nullable<double> Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<double>> ^ selector);``````
``public static Nullable<double> Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<double>> selector);``
``static member Average : seq<'Source> * Func<'Source, Nullable<double>> -> Nullable<double>``
``````<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Double))) As Nullable(Of Double)``````

#### 형식 매개 변수

TSource

`source` 요소의 형식입니다.The type of the elements of `source`.

#### 매개 변수

source
IEnumerable<TSource>

평균을 계산할 값의 시퀀스입니다.A sequence of values to calculate the average of.

selector
Func<TSource,Nullable<Double>>

각 요소에 적용할 변환 함수입니다.A transform function to apply to each element.

#### 반환

값 시퀀스의 평균이거나 소스 시퀀스가 비어 있거나 `null` 값만 포함하는 경우 `null`입니다.The average of the sequence of values, or `null` if the source sequence is empty or contains only values that are `null`.

#### 예외

`source` 또는 `selector``null`인 경우`source` or `selector` is `null`.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) 평균을 계산 합니다.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 `selector` 함수의 본문을 변경하세요.To extend the example to this topic, change the body of the `selector` function.

``````string[] numbers = { "10007", "37", "299846234235" };

double average = numbers.Average(num => Convert.ToInt64(num));

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 99948748093.
``````
``````' Create an array of strings.
Dim numbers() As String = {"10007", "37", "299846234235"}

' Determine the average number after converting each
' string to an Int64 value.
Dim avg As Double =
numbers.Average(Function(number) Convert.ToInt64(number))

' Display the output.
MsgBox("The average is " & avg)

' This code produces the following output:
'
' The average is 99948748093
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>)

입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 nullable Decimal 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of nullable Decimal values that are obtained by invoking a transform function on each element of the input sequence.

``````public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
static Nullable<System::Decimal> Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<System::Decimal>> ^ selector);``````
``public static Nullable<decimal> Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<decimal>> selector);``
``static member Average : seq<'Source> * Func<'Source, Nullable<decimal>> -> Nullable<decimal>``
``````<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Decimal))) As Nullable(Of Decimal)``````

#### 형식 매개 변수

TSource

`source` 요소의 형식입니다.The type of the elements of `source`.

#### 매개 변수

source
IEnumerable<TSource>

평균을 계산할 값의 시퀀스입니다.A sequence of values to calculate the average of.

selector
Func<TSource,Nullable<Decimal>>

각 요소에 적용할 변환 함수입니다.A transform function to apply to each element.

#### 반환

값 시퀀스의 평균이거나 소스 시퀀스가 비어 있거나 `null` 값만 포함하는 경우 `null`입니다.The average of the sequence of values, or `null` if the source sequence is empty or contains only values that are `null`.

#### 예외

`source` 또는 `selector``null`인 경우`source` or `selector` is `null`.

시퀀스의 요소 합이 MaxValue보다 큰 경우The sum of the elements in the sequence is larger than MaxValue.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) 평균을 계산 합니다.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 `selector` 함수의 본문을 변경하세요.To extend the example to this topic, change the body of the `selector` function.

``````string[] numbers = { "10007", "37", "299846234235" };

double average = numbers.Average(num => Convert.ToInt64(num));

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 99948748093.
``````
``````' Create an array of strings.
Dim numbers() As String = {"10007", "37", "299846234235"}

' Determine the average number after converting each
' string to an Int64 value.
Dim avg As Double =
numbers.Average(Function(number) Convert.ToInt64(number))

' Display the output.
MsgBox("The average is " & avg)

' This code produces the following output:
'
' The average is 99948748093
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>)

입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 Int64 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence.

``````public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
static double Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, long> ^ selector);``````
``public static double Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,long> selector);``
``static member Average : seq<'Source> * Func<'Source, int64> -> double``
``````<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Long)) As Double``````

#### 형식 매개 변수

TSource

소스 요소의 형식입니다.The type of the elements of source.

#### 매개 변수

source
IEnumerable<TSource>

평균을 계산할 값의 시퀀스입니다.A sequence of values to calculate the average of.

selector
Func<TSource,Int64>

각 요소에 적용할 변환 함수입니다.A transform function to apply to each element.

#### 반환

값 시퀀스의 평균입니다.The average of the sequence of values.

#### 예외

`source` 또는 `selector``null`인 경우`source` or `selector` is `null`.

`source`에 요소가 없는 경우`source` contains no elements.

시퀀스의 요소 합이 MaxValue보다 큰 경우The sum of the elements in the sequence is larger than MaxValue.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) 평균을 계산 합니다.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) to calculate an average.

``````string[] numbers = { "10007", "37", "299846234235" };

double average = numbers.Average(num => Convert.ToInt64(num));

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 99948748093.
``````
``````' Create an array of strings.
Dim numbers() As String = {"10007", "37", "299846234235"}

' Determine the average number after converting each
' string to an Int64 value.
Dim avg As Double =
numbers.Average(Function(number) Convert.ToInt64(number))

' Display the output.
MsgBox("The average is " & avg)

' This code produces the following output:
'
' The average is 99948748093
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)

입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 Int32 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence.

``````public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
static double Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, int> ^ selector);``````
``public static double Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,int> selector);``
``static member Average : seq<'Source> * Func<'Source, int> -> double``
``````<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Integer)) As Double``````

#### 형식 매개 변수

TSource

`source` 요소의 형식입니다.The type of the elements of `source`.

#### 매개 변수

source
IEnumerable<TSource>

평균을 계산할 값의 시퀀스입니다.A sequence of values to calculate the average of.

selector
Func<TSource,Int32>

각 요소에 적용할 변환 함수입니다.A transform function to apply to each element.

#### 반환

값 시퀀스의 평균입니다.The average of the sequence of values.

#### 예외

`source` 또는 `selector``null`인 경우`source` or `selector` is `null`.

`source`에 요소가 없는 경우`source` contains no elements.

시퀀스의 요소 합이 MaxValue보다 큰 경우The sum of the elements in the sequence is larger than MaxValue.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) 평균을 계산 합니다.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to calculate an average.

``````string[] fruits = { "apple", "banana", "mango", "orange", "passionfruit", "grape" };

double average = fruits.Average(s => s.Length);

Console.WriteLine("The average string length is {0}.", average);

// This code produces the following output:
//
// The average string length is 6.5.
``````
``````' Create an array of strings.
Dim fruits() As String =
{"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average length of the strings in the array.
Dim avg As Double = fruits.Average(Function(s) s.Length)

' Display the output.
MsgBox("The average string length is " & avg)

' This code produces the following output:
'
' The average string length is 6.5
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average<TSource>(IEnumerable<TSource>, Func<TSource,Double>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Double>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Double>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Double>)

입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 Double 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Double values that are obtained by invoking a transform function on each element of the input sequence.

``````public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
static double Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, double> ^ selector);``````
``public static double Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,double> selector);``
``static member Average : seq<'Source> * Func<'Source, double> -> double``
``````<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Double)) As Double``````

#### 형식 매개 변수

TSource

`source` 요소의 형식입니다.The type of the elements of `source`.

#### 매개 변수

source
IEnumerable<TSource>

평균을 계산할 값의 시퀀스입니다.A sequence of values to calculate the average of.

selector
Func<TSource,Double>

각 요소에 적용할 변환 함수입니다.A transform function to apply to each element.

#### 반환

값 시퀀스의 평균입니다.The average of the sequence of values.

#### 예외

`source` 또는 `selector``null`인 경우`source` or `selector` is `null`.

`source`에 요소가 없는 경우`source` contains no elements.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) 평균을 계산 합니다.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 `selector` 함수의 본문을 변경하세요.To extend the example to this topic, change the body of the `selector` function.

``````string[] numbers = { "10007", "37", "299846234235" };

double average = numbers.Average(num => Convert.ToInt64(num));

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 99948748093.
``````
``````' Create an array of strings.
Dim numbers() As String = {"10007", "37", "299846234235"}

' Determine the average number after converting each
' string to an Int64 value.
Dim avg As Double =
numbers.Average(Function(number) Convert.ToInt64(number))

' Display the output.
MsgBox("The average is " & avg)

' This code produces the following output:
'
' The average is 99948748093
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

추가 정보

## Average<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>)Average<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>)

입력 시퀀스의 각 요소에 대해 변형 함수를 호출하여 가져온 Decimal 값 시퀀스의 평균을 계산합니다.Computes the average of a sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence.

``````public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
static System::Decimal Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, System::Decimal> ^ selector);``````
``public static decimal Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,decimal> selector);``
``static member Average : seq<'Source> * Func<'Source, decimal> -> decimal``
``````<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Decimal)) As Decimal``````

#### 형식 매개 변수

TSource

`source` 요소의 형식입니다.The type of the elements of `source`.

#### 매개 변수

source
IEnumerable<TSource>

평균을 계산하는 데 사용되는 값의 시퀀스입니다.A sequence of values that are used to calculate an average.

selector
Func<TSource,Decimal>

각 요소에 적용할 변환 함수입니다.A transform function to apply to each element.

#### 반환

값 시퀀스의 평균입니다.The average of the sequence of values.

#### 예외

`source` 또는 `selector``null`인 경우`source` or `selector` is `null`.

`source`에 요소가 없는 경우`source` contains no elements.

시퀀스의 요소 합이 MaxValue보다 큰 경우The sum of the elements in the sequence is larger than MaxValue.

### 예제

다음 코드 예제에 사용 하는 방법을 보여 줍니다. Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) 평균을 계산 합니다.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) to calculate an average.

참고

이 코드 예제에서는 이 항목에서 설명하는 특정 오버로드와는 다른 이 오버로드된 메서드의 오버로드를 사용합니다.This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. 이 항목의 예제를 확장하려면 `selector` 함수의 본문을 변경하세요.To extend the example to this topic, change the body of the `selector` function.

``````string[] numbers = { "10007", "37", "299846234235" };

double average = numbers.Average(num => Convert.ToInt64(num));

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 99948748093.
``````
``````' Create an array of strings.
Dim numbers() As String = {"10007", "37", "299846234235"}

' Determine the average number after converting each
' string to an Int64 value.
Dim avg As Double =
numbers.Average(Function(number) Convert.ToInt64(number))

' Display the output.
MsgBox("The average is " & avg)

' This code produces the following output:
'
' The average is 99948748093
``````

### 설명

Visual Basic 쿼리 식 구문에는 `Aggregate Into Average()` 절 뒤에 변환 Average합니다.In Visual Basic query expression syntax, an `Aggregate Into Average()` clause translates to an invocation of Average.

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