System.Math.TotalVariance

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Object Pascal

function TotalVariance(const Data: array of Single): Single;
function TotalVariance(const Data: array of Double): Double;
function TotalVariance(const Data: array of Extended): Extended;

C++

extern DELPHI_PACKAGE float __fastcall TotalVariance(float const *Data, const int Data_High)/* overload */;

Properties

Type Visibility Source Unit Parent
function public
System.Math.pas
System.Math.hpp
System.Math System.Math

Description

Returns the statistical variance from an array of values.

TotalVariance returns the sum of the squares of the difference between each Data value and the mean of the data values.

Total Variance: SUM(i=1,N)[(X(i) - Mean)**2]

See Also