Coefficient of Variation
The coefficient of variation is the ratio between the standard deviation of a sample and its mean.
The coefficient of variation is usually expressed in percentages:
It allows us to compare the dispersions of two different distributions if their means are positive.
The coefficient of variation for a distribution can be calucated to compare the values obtained with another distribution.
The greater dispersion corresponds to the value of the coefficient of greater variation.
Example
A distribution is x = 140 and σ = 28.28 and the other is x = 150 and σ = 24. Which of the two has a greater dispersion?
The first distribution has a higher dispersion.
