From All the Employees in a Company, a Small Group $\Sigma$

Multiple Choice

From all the employees in a company, a small group was selected to participate in a study of employee satisfaction. The results of the study were to be used to make decisions about all the employees of the company. On one measure the following summary numbers were obtained: $\Sigma$ X= 30, $\Sigma$ X² = 350, N = 12. Calculate the appropriate standard deviation.

A) 22.92
B) 4.79
C) 5.00
D) None of the other alternatives are correct.