[Overview][Constants][Types][Classes][Procedures and functions] |
Return population variance
Source position: line 0
function popnstddev( |
const data: array [] of float |
):float; |
const data: PFloat; |
const N: Integer |
):float; |
Popnstddevreturns the square root of the population variance of the values in the Dataarray. It returns zero if there is only one value.
The second form of this function accepts a pointer to an array of Nvalues.
None.
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Return population variance |
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Return mean value of array |
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Return mean and standard deviation of array |
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Return standard deviation of data |
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Return 4 first moments of distribution |
Program Example35; { Program to demonstrate the PopnStdDev function. } Uses Math; Type TExArray = Array[1..100] of Float; Var I : Integer; ExArray : TExArray; begin Randomize; for I:=low(ExArray) to high(ExArray) do ExArray[i]:=(Random-Random)*100; Writeln('Max : ',MaxValue(ExArray):8:4); Writeln('Min : ',MinValue(ExArray):8:4); Writeln('Pop. stddev. : ',PopnStdDev(ExArray):8:4); Writeln('Pop. stddev. (b) : ',PopnStdDev(@ExArray[1],100):8:4); end.