mean

Return mean value of array

Declaration

Source position: math.pp line 383

function mean(

const data: array of Single

):Float; function mean(

const data: PSingle;

const N: LongInt

):Float; function mean(

const data: array of Double

):Float; function mean(

const data: PDouble;

const N: LongInt

):Float; function mean(

const data: array of Extended

):Float; function mean(

const data: PExtended;

const N: LongInt

):Float;

Description

Mean returns the average value of data. The second form accepts a pointer to an array of N values.

Errors

None.

Example

Program Example27;

{ Program to demonstrate the Mean function. }
{ @ should return typed pointer }
{$T+}
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('Mean     : ',Mean(ExArray):8:4);
  Writeln('Mean (b) : ',Mean(@ExArray[1],100):8:4);
end.

meanandstddev		Return mean and standard deviation of array
momentskewkurtosis		Return 4 first moments of distribution
sum		Return sum of values

mean

Declaration

Description

Errors

See also

Example