# DataFrameStatFunctions Class

## Definition

Provides statistic functions for DataFrame.

public sealed class DataFrameStatFunctions
type DataFrameStatFunctions = class
Public NotInheritable Class DataFrameStatFunctions
Inheritance
DataFrameStatFunctions

## Methods

 Calculates the approximate quantiles of a numerical column of a DataFrame. Calculates the Pearson Correlation Coefficient of two columns of a DataFrame. Calculates the correlation of two columns of a DataFrame. Calculate the sample covariance of two numerical columns of a DataFrame. Computes a pair-wise frequency table of the given columns, also known as a contingency table. Finding frequent items for columns, possibly with false positives with a default support of 1%. Finding frequent items for columns, possibly with false positives. Returns a stratified sample without replacement based on the fraction given on each stratum. Returns a stratified sample without replacement based on the fraction given on each stratum.