In a study of two groups, the following results were obtained

Which of the following statements is correct?

Options

A. a) Group A is less variable than group B because group A's standard deviation is smaller
B. b) Group A is less variable than group B because group A's sample size is smaller
C. c) Group A is less variable thun d) group B because group A's sample mean is smaller
D. d) Group A is less variable than group B because group A's coefficient of variation is smaller

Answer

D