variance

double variance(double* first, double* last);

Returns the sample variance of the elements in [first, last).

Parameters:
firstBeginning iterator for the container of elements.
lastEnding iterator for the container of elements.

Returns:
Variance

Usage:
double s[4] = {1.1, 2.2, 3.3, 4.4};
double v = variance(s, s + 4);

Header:
#include "descript.h"