Returns the population standard deviation.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.
Returns the population standard deviation.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.