## About This Tool

The online Coefficient of variation Calculator is used to calculate the coefficient of variation of a set of numbers.

## Coefficient of variation

In probability theory and statistics, the coefficient of variation (CV) is a normalized measure of dispersion of a probability distribution. It is also called unitized risk or the variation coefficient.

The coefficient of variation is defined as the ratio of the standard deviation to the mean:

Where:

c_{v} = coefficient of variation

σ = population standard deviation

x_{1}, ..., x_{N} = the population data set

μ = mean of the population data set

N = size of the population data set