Statistics & Probability
Intermediate

Coefficient of Variation

Relative variability as a percentage of the mean.

Formula

CV=σxˉ×100%CV = \frac{\sigma}{\bar{x}}\times 100\%

Variables

\sigmaStandard deviation
\bar{x}Mean

Example

Mean 50 with σ = 5 gives CV = 5/50 × 100% = 10%.

Did You Know?

The coefficient of variation lets you compare spread across data sets with completely different units.

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