## FANDOM

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In mathematics and statistics, coefficient of variation (CV) is a normalized measure of dispersion of a probability distribution or frequency distribution. It is also known as unitized risk or the variation coefficient. The absolute value of the CV is sometimes known as relative standard deviation (RSD), which is expressed as a percentage.

CV is defined as the ratio of the standard deviation $\ \sigma$ to the mean $\ \mu$:

$c_v = \frac{\sigma}{\mu}$