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


My Answer:

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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