A sample was taken of the salaries of four employees from a large company.The following are their salaries (in thousands of dollars)for this year: 33, 36, 41, and 47.The variance of their salaries is approximately
A)28.19
B)75.59
C)37.58
D)6.13
E)5.31

Question

Quizplus · Accepted Answer

The variance is calculated by finding the mean of the salaries, then finding the squared differences from the mean, averaging those squared differences, and dividing by the number of data points minus one (for a sample). The calculated variance is approximately 37.58.

A Sample Was Taken of the Salaries of Four Employees