Returns the population variance.VAR_POP returns the population variance of a set of numbers after discarding the nulls in this set. The expr is a number expression, and the function returns a value of type NUMERIC. If the function is applied to an empty set, then it returns null. The function makes the following calculation:
Returns the population variance.VAR_POP returns the population variance of a set of numbers after discarding the nulls in this
set. The expr is a number expression, and the function returns a value of type NUMERIC. If the
function is applied to an empty set, then it returns null. The function makes the following calculation: