Final answer:
The statement is true; the coefficient of variation is a unit-free measure of dispersion that compares the standard deviation to the mean, allowing comparison between data sets of different scales.
Step-by-step explanation:
The coefficient of variation is indeed a unit-free measure of dispersion; hence, the statement is true. It is calculated as the ratio of the standard deviation to the mean, expressed as a percentage. This measure is particularly useful because it allows for comparison of variability between data sets with different units or different scales. The coefficient of variation helps to understand the relative spread of the data in relation to the mean of the distribution.