MathVariance

Calculates the variance (second moment) of array elements. Analog of the var() in R.

double  MathVariance(
   const double&  array[]                // array with data
   );

Parameters

array

[in] Array with data for calculation.

start=0

[in] Initial index for calculation.

count=WHOLE_ARRAY

[in] The number of elements for calculation.

Return Value

Variance of array elements. In case of error it returns NaN (not a number).