Coefficient Of Variation Calculator
Calculate the coefficient of variation (CV) for a set of numbers. The CV is a standardized measure of dispersion, useful for comparing variability between datasets with different units or means.
Published by:
isCalculator Editorial Team
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How to use this tool?
Follow these steps to calculate the Coefficient of Variation (CV) for your data:
- Enter your data in the "Data Values" text area. Use commas to separate each number (e.g.,
10, 12, 23, 23, 16, 23, 21, 16). - Click the "Calculate CV" button to process your data.
- View your results:
- Mean – the average of your data.
- Standard Deviation – the spread of your data.
- Coefficient of Variation (CV) – the ratio of standard deviation to mean, expressed as a percentage. It measures relative variability.
Note: The calculator uses the sample standard deviation formula (dividing by n-1). The CV formula is: CV = (Standard Deviation / Mean) × 100%. No specific units are required—any numeric data works.
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Frequently Asked Questions
The coefficient of variation (CV) is a statistical measure of the relative dispersion of data points around the mean. It is calculated as the ratio of the standard deviation to the mean, often expressed as a percentage. It is useful for comparing variability between datasets with different units or means.
A lower CV indicates less variability relative to the mean, while a higher CV indicates more variability. For example, a CV of 10% means the standard deviation is 10% of the mean. There is no universal threshold; it depends on the context.
The CV is typically used for ratio-scale data with a meaningful zero and positive values. If the mean is negative or zero, the CV becomes undefined or meaningless. This calculator will still compute a value, but interpretation may not be valid.
