DEVSQ(n1, n2, ...)
DEVSQ returns the sum of squares of deviations of a data set from the sample mean.
Strings and empty cells are simply ignored.
This function is Excel compatible.
Let us assume that the cells A1, A2, ..., A5 contain numbers 11.4, 17.3, 21.3, 25.9, and 40.1. Then
DEVSQ(A1:A5) equals 470.56.
STDEV.