How to Calculate Standard Deviation

Posted by mbalectures | Posted in Descriptive statistics | 7,870 views | Posted on 15-06-2010

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Standard deviation is the most widely used measure of dispersion. It is defined as the positive square root of sum of the square deviation of the variable from its mean divided by total number of observations. In other words it is the positive square root of a quantity called variance. Standard deviation is a very […]