A CV of 5% means values typically differ from the mean by about 5% of its size.
How to use the Coefficient of Variation Calculator
- Data
Results update as you type, and every field accepts the units shown in its menu.
How it works
Calculate the sample standard deviation and the mean, then divide.
What each result means
- Coefficient of variation = stdev([Data])÷mean([Data])×100
- Standard deviation = stdev([Data])
- Mean = mean([Data])
Formula
CV = s ÷ x̄ × 100Worked example
Inputs — Data: 102, 98, 105, 97, 101, 99.
Results — Coefficient of variation = 2.934 %; Standard deviation = 2.9439; Mean = 100.3333.
Frequently asked questions
When is CV not meaningful?
When the mean is near zero or the data can be negative.
Is relative standard deviation the same?
Yes, RSD is another name for CV.
What formula does the Coefficient of Variation Calculator use?
CV = s ÷ x̄ × 100.