A study of the scores on an in-plant course in management principles and the years of service of the employees enrolled in the course resulted in these statistics:
i. Mean test score was 200 with a standard deviation of 40
ii. Mean number of years of service was 20 years with a standard deviation of 2 years.
In comparing the relative dispersion of the two distributions, what are the coefficients of variation?
A) Test 50%, service 60%
B) Test 100%, service 400%
C) Test 20%, service 10%
D) Test 35%, service 45%
E) None of the choices are correct.

Question

Quizplus · Accepted Answer

The coefficient of variation is calculated as (standard deviation / mean) * 100. For the test: (40/200)*100 = 20%. For the service: (2/20)*100 = 10%.

A Study of the Scores on an In-Plant Course in Management