Question

As a restaurant manager, you are tracking the number of ketchup bottles used each week in the restaurant. For six

weeks, the number of bottles used each week were 10, 14, 11, 10, 18, and 17.
What is the mean number of ketchup bottles used in one week?
A. 8
B. 10 C. 35/3
D. 40/3
E. 14

Answer 1

The mean is 40/3 ⇒ D

Explanation:

The mean of a set of data = The sum of data ÷ the number of data

∵ A restaurant manager tracking the number of ketchup bottles in

six weeks

∴ The number of data = 6

∵ The numbers of ketchup bottles used each week are 10, 14, 11, 10, 18, 17

→ Find their sum

∴ Their sum = 10 + 14 + 11 + 10 + 18 + 17

∴ Their sum = 80

∵ The mean = The sum of data ÷ the number of data

∴ The mean = 80 ÷ 6

→ Simplify it by dividing both by 2

∴ The mean = 40/3