21
AssignmentMultiple Select

Finding the Mean

Question 21 • Concepts in Probability and Statistics A

In calculating the mean donation amount, which steps would you need to take? Check all that apply.

Answer
A
Multiply each donation amount by the number of people.
B
Add the total amount of money.
C
Add the total number of people.
D
2,550 ÷ 25 = $102
E
25 ÷ 2,550 = $0.01

Explanation

To find the mean, first use the donation amounts and the number of people who gave each amount to calculate the total donated. Add those amounts to get $2,550, and add the people to get 25. Then divide the total by the number of people: $2,550 ÷ 25 = $102, so the mean donation is $102. Dividing 25 by $2,550 reverses the calculation and does not give the mean.

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