Express standard deviation relative to the mean for scale-free comparison.
Because the coefficient of variation is dimensionless, it lets variability be compared across datasets with different units or wildly different magnitudes. It is meaningless when the mean is near zero. Comparing raw standard deviations across datasets with different scales is misleading, which is exactly the problem CV solves.
Coefficient of Variation
CV = standard deviation ÷ mean × 100
CV = standard deviation ÷ mean × 100 Because the coefficient of variation is dimensionless, it lets variability be compared across datasets with different units or wildly different magnitudes. It is meaningless when the mean is near zero.
Comparing raw standard deviations across datasets with different scales is misleading, which is exactly the problem CV solves.
This calculator takes 4 inputs: Mean, Standard deviation, Mean of a second dataset, Standard deviation of the second dataset. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.