Name

STDDEV_POP — Returns the population standard deviation.

Synopsis

numeric STDDEV_POP ( in expr any );
 

Description

STDDEV_POP computes the population standard deviation and returns the square root of the population variance. This function is the same as the square root of the VAR_POP function. When VAR_POP returns null, returns null.

Parameters

expr

Number expression.

Return Types

The function returns a value of type NUMERIC. If the function is applied to an empty set, then it returns null.