File: ex50.pp

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Program Example50;

{ Program to demonstrate the Variance function. }

Uses math;

Type
  TExArray = Array[1..100] of Float;
    
Var
  I : Integer;
  ExArray : TExArray; 
  V : float;
    
begin
  Randomize;
  for I:=1 to 100 do 
    ExArray[i]:=(Random-Random)*100;
  V:=Variance(ExArray);
  Writeln('Variance     : ',V:8:4);  
  V:=Variance(@ExArray[1],100);
  Writeln('Variance (b) : ',V:8:4);  
end.