If the standard deviation of beginning salaries for business

If the standard deviation of beginning salaries for business graduates in 2010 was $2200 and in 2014 it was $3100, what is true about the comparison of the beginning salaries of the 2 groups of graduates? a. none of these is correct b. the coefficient of variation for the 2 groups is the same c. the salaries for the 2010 group was more consistent than those of the 2014 group d. the average salary of the 2014 group was greater than that of the 2010 group

Solution

A smaller standard deviation means less variation (more consistent) in values.

As 2010 has a less standard deviation than 2014 (2200 vs 3100), then

OPTION c. the salaries for the 2010 group was more consistent than those of the 2014 group [ANSWER, C]