DVAR

Syntax:

DVAR(range, condition)

Returns the variance of the values of the cells in the range for which the condition is satisfied.

The formula 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:

DVAR(A1:A15, B1:B15>0)

returns the variance of the contents of cells in the range A1 to A15 whose equivalent in the range B1 to B15 is greater than zero.

See DAVG for more examples of how to use the condition to control which cells are included.