Reference Type: Supported, Category: Math Functions, Integration Agreement: 10105
This extrinsic function returns the standard deviation. Standard deviation is defined as:
"A measure of variability equal to the square root of the arithmetic average of the squares of the deviations from the mean in a frequency distribution."1
(1Definition as taken from: Webster's New World College Dictionary, Fourth Edition; Michael Agnes, Editor in Chief; David B. Guralink, Editor in Chief Emeritus; Copyright 2001, 2000, 1999 by IDG Books Worldwide, Inc.; ISBN 0-02-863118-8.)
(required) Sum of squares.
Returns the standard deviation.
>S X=$$SD^XLFMTH(5,25,2) >W X 3.53553390593
September 15, 2011