Measure the relative variability of a dataset compared to its mean.
Data Entry
Variability Results
Coefficient of Variation (CV)27.49%Moderate variability
Standard Deviation (σ)4.123
Sample Mean (μ)15.000
Dataset Preview
10,12,15,18,20
About this calculator
Overview
The Coefficient of Variation (CV), also known as relative standard deviation (RSD), is a standardized measure of dispersion of a probability distribution or frequency distribution. It is often expressed as a percentage.
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Pro Tips
Use CV to compare the consistency of two processes that operate at different scales.
CV is only meaningful for data measured on a ratio scale (where zero is absolute).
A CV below 10% indicates very low variability, while above 30% suggests high relative dispersion.
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Mathematical Formula
The Coefficient of Variation is calculated by dividing the standard deviation by the mean, then multiplying by 100 to get a percentage:
