VAR

Returns the sample variance of the values in a data set.

Syntax:

VAR(list)

Calculates the sample variance of the values in the list, which may be an array, a range of cells, or a comma-separated list of values.

The equation used is:

(n·Σi=n (xi2) − (Σi=n xi)2) ÷ (n·(n-1))

where xi is each value and n is the number of values.

Example:

VAR(A1:A15)

returns the variance of the contents of cells in the range A1 to A15.