Section 3.3

Fundamentals of Social Statistics by Adam J. McKee

Standard Deviation

The standard deviation (s or SD) is the average spread of a group of scores from the mean of the distribution of scores.  That is, it is a measure of the rise and fall of scores around the mean.  Coupled with the mean, the standard deviation is the most commonly reported measure of variability.

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Last Modified:  06/03/2021

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