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TMtxVec.StdDev Method ()
TMtxVec Class | TMtxVec Members | AbstractMtxVec Namespace | StdDev Method | Example | See Also
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Standard deviation.

Pascal
function StdDev: double; overload;
Description

Calculate the standard deviation of all calling object elements. The result is a real value. An exception is raised if calling vector Complex property is true.

See Also

Mean

Example
var a: TVec; c: double; aMean: double; begin CreateIt(a); try a.SetIt(False,[1,2,3,4]); aMean := a.Mean; c := a.StdDev(aMean); //if both Mean and StdDev are required this is faster // c := a.StdDev; //this is an alternative. finally FreeIt(a); end; end;
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