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# Standard Error of theCoefficient of Variation

Providing certain assumptions are met, the standard error of the coefficient of variation (SE(CV)) can be estimated using this equation:

#### Algebraically speaking -  SE (CV)  ≈ CV √ 1+2 ( CV ) 2 √(2n) 100

When the CV is less than 15, a much simpler formula can be used:

 SE (CV) ≈ CV √(2n)
where:
• CV is the coefficient of variation,
• n is the number of observations.

This expression for the standard error is approximate and assumes that samples are being drawn from a normally distributed population. Except where otherwise specified, all text and images on this page are copyright InfluentialPoints, all rights reserved. Images not copyright InfluentialPoints credit their source on web-pages attached via hypertext links from those images.