System.Math.PopnVariance
Delphi
function PopnVariance(const Data: array of Single): Single;
function PopnVariance(const Data: array of Double): Double;
function PopnVariance(const Data: array of Extended): Extended;
C++
extern DELPHI_PACKAGE float __fastcall PopnVariance(const float *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
Calculates the population variance.
PopnVariance calculates the population variance of all values in the Data array parameter, using the n method (biased): TotalVariance / n. In C++,. the Data_Size parameter is the index of the last value in the Data array (one less than the number of data items).