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nobillionaireNobley
The measure of dispersion that indicates how much scores in a sample vary around the mean of the sample is the standard deviation.
Erudite1
The measure is called STANDARD DEVIATION.
Standard deviation is a mathematical measure that is used to evaluate the difference between the mean value of a set of number and each value in the group. It is calculated as the square root of variance by determining the variation between each data point relative to the mean.