Sample Coefficient of Variation Calculator
Compare sample variability relative to a positive sample mean.
Your result
MATHEnter your values and select calculate.
On this page How it works & practical examples
How to use the Sample Coefficient of Variation Calculator
Use at least two positive observations measured on a ratio scale with a meaningful zero. The sample standard deviation divides by n−1.
The calculation
Worked example
For 10, 20 and 30, the sample standard deviation is 10 and mean is 20, giving a 50% CV.
Assumptions and limits
Not suitable for interval scales such as Celsius temperature or data with a mean near zero. This tool intentionally requires positive observations and does not estimate a population correction.
Common questions
Which inputs should I use?
Use at least two positive observations measured on a ratio scale with a meaningful zero. The sample standard deviation divides by n−1.
What does the result exclude?
Not suitable for interval scales such as Celsius temperature or data with a mean near zero. This tool intentionally requires positive observations and does not estimate a population correction.