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Standard Deviation equation(s): (1) full population s.d. = SQRT ( SUM (Observed Value - Mean Value)2 ) / N (2) sample of full population s.d. = SQRT ( SUM (Observed Value - Mean Value)2 ) / ( N - 1 ) where N is the number of Observed values.

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16y ago

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Difference between standard deviation and mean devition?

The mean deviation (also called the mean absolute deviation) is the mean of the absolute deviations of a set of data about the data's mean. The standard deviation sigma of a probability distribution is defined as the square root of the variance sigma^2,


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