DEVSQ(n1, n2, ...)
DEVSQ returns the sum of squares of deviations of a data set from the sample mean.
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.