Question

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: - Mean test score was 200 with a standard deviation of 40 - 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

Answer 1

Answer:

Coefficient of Variation of test score = 20%

Coefficient of Variation of years of service = 10%

Step-by-step explanation:

We are given that Mean test score was 200 with a standard deviation of 40 and Mean number of years of service was 20 years with a standard deviation of 2 years.

• Coefficient of Variation of test score is;

          C.V. = $\frac{S.D.}{Mean}*100$ = $\frac{40}{200}*100$ = 20% .

• Coefficient of Variation of years of service is;

          C.V. = $\frac{S.D.}{Mean}*100$ = $\frac{2}{20}*100$ = 10% .