STDP

Returns the population standard deviation of the values in a data set (this is the square root of the population variance).

Syntax:

STDP(list)

Calculates the population standard deviation 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) ÷ n2 )

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

Example:

STDP(A1:A15)

returns the population standard deviation of cells in the range A1 to A15.