# Pre-Algebra

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Find the mean of the following data set:

25, 30, 20, 20, 25, 35, 35, 10

a. 15
b. 20
c. 25
d. 30

b. 20

• Pre-Algebra -

http://www.mathsisfun.com/mean.html

Did you add them up and divide by 8?

• Pre-Algebra -

YES SO THE ANSWER IS 30

• Pre-Algebra -

25 + 25 = 50
35 + 35 = 70
30 + 20 + 20 + 10 = 80

50 + 70 + 80 = ??

Divide that number by 8.

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