Coefficient of variation calculator
Compare standard deviation with the mean for ratio-scale data with a meaningful zero. Select sample or population.
All calculations stay in your browser.
How do I use this page?
- Enter or import your data.
- Choose settings and select Calculate.
- Review the method and download the result.
Method, example and limitations
CV = 100 × SD / mean. We use non-negative data with a positive mean. Do not use Celsius or arbitrary scales. A near-zero mean gives an unstable ratio. There is no universal good-CV threshold.
Masses 10; 20; 30: mean 20, sample SD 10, sample CV 50%. Population SD is about 8.16497, giving population CV about 40.82483%.