Coefficient of Variation

The coefficient of variation is the standard deviation divided by the mean. The worksheet reports the quotient: it does not convert the value to a percentage. The coefficient of variation is a dimensionless measure of variation. This statistic is not defined for the case of a zero mean and this measure is only useful when dealing with strictly positive data.

Population Coefficient of Variation (V)

$image\popcov.png$

Sample Coefficient of Variation (V)

$image\samcov.png$

where

	= Population Standard Deviation
s	= Sample Standard Deviation
	= Population Mean
	= Sample Mean