An airline company is,on average,late 10 minutes for arrivals.If the variance for the lateness statistic is 9,then the coefficient of variation is _____.
A)3
B)300
C)10
D)90
E)30

Question

Quizplus · Accepted Answer

The coefficient of variation is calculated as (standard deviation / mean) * 100. The standard deviation is the square root of the variance, which is 3. Therefore, the coefficient of variation is (3 / 10) * 100 = 30.

An Airline Company Is,on Average,late 10 Minutes for Arrivals