coefficient of variation

The coefficient of variation (CV) is a statistical measure that expresses the extent of variability in relation to the mean of a dataset. It is calculated as the ratio of the standard deviation to the mean, often presented as a percentage. This metric is widely used to compare the degree of variation between different data series, even if their means differ significantly. In fields such as finance, quality control, and scientific research, the coefficient of variation helps assess relative risk, consistency, and reliability of measurements or returns. Use this tag for posts discussing statistical analysis, data variability, risk assessment, and related topics.