The coefficient of variation is
A)measured on a scale from 0 to 100.
B)a unit-free statistic.
C)helpful when the sample means are zero.
D)a measure of correlation for two variables.

Question

Quizplus · Accepted Answer

The coefficient of variation is a ratio of the standard deviation to the mean, and as both of these measures have the same units of measurement, the resulting value of the coefficient of variation is unit-free. Therefore, choice B is correct. The coefficient of variation is not measured on a scale from 0 to 100 (choice A), and it is not a measure of correlation (choice D). The coefficient of variation can be helpful regardless of whether the sample means are zero or not, so choice C is not correct.

The Coefficient of Variation Is