Question

If a set of data has mean 24 and variance 9 , then it's coefficient of variation is a. 37.5% b. 23% c. 15% d. 12.5%

Answer 1

Answer: 12.5%

Work Shown

mu = mean = 24

sigma^2 = variance = 9

sigma = standard deviation

sigma = sqrt(variance) = sqrt(9) = 3

CV = coefficient of variation

CV = (sigma/mu)*100%

CV = (3/24)*100%

CV = (0.125)*100%

CV = 12.5%