A sample of the hourly wages of 15 employees at one of the Hospitals in Spokane was organized into the following table:
|
Hourly Wages ($)
|
Number of Employees
|
|
8 up to 10
|
3
|
|
10 up to 12
|
7
|
|
12 up to 14
|
4
|
|
14 up to 16
|
1
|
|
Total
|
15
|
Compute the mean and standard deviation of the hourly wages.