The CEO of a company wants to know the number of cups of coffee his employees drink in a week. The number of cups of coffee drunk by a sample of employees is shown below.
10, 13, 9, 7, 7, 9, 10, 10, 13, 9, 7, 10
Assuming the sample is representative of all the employees in the company, what is the mean number of cups of coffee an employee of the company drinks per week?
A.
12.5
B.
11.5
C.
9.5
D.
10
1 answer
Did you not simply add up the data values and divide that by 12 ?
1 answer