# WorksheetFunction.Beta_Dist Method (Excel)

Returns the beta cumulative distribution function.

## Syntax

expression. `Beta_Dist`( `_Arg1_` , `_Arg2_` , `_Arg3_` , `_Arg4_` , `_Arg5_` )

expression A variable that represents a 'WorksheetFunction' object.

### Parameters

Name Required/Optional Data Type Description
Arg1 Required Double The value between A and B at which to evaluate the function.
Arg2 Required Double The Alpha parameter of the distribution.
Arg3 Required Double The Beta parameter of the distribution.
Arg4 Optional Variant Cumulative - a logical value that determines the form of the function. If cumulative is TRUE, BETA.DIST returns the cumulative distribution function; if FALSE, it returns the probability density function.
Arg5 Optional Variant An optional lower bound to the interval of x.
Arg6 Optional Variant An optional upper bound to the interval of x.

Double

## Remarks

The beta distribution is commonly used to study variation in the percentage of something across samples, such as the fraction of the day people spend watching television:

• If any argument is nonnumeric, Beta_Dist returns the #VALUE! error value.

• If alpha ? 0 or beta ? 0, Beta_Dist generates an error value.

• If x < A, x > B, or A = B, Beta_Dist generates an error value.

• If you omit values for A and B (lower and upper bound), Beta_Dist uses the standard cumulative beta distribution, so that A = 0 and B = 1.