PreAlgebra
posted by Wendy .
Find the mean of the following data set:
25, 30, 20, 20, 25, 35, 35, 10
15
20
25
30
15 IS MY ANSWER

since almost all the values are greater than 15, it is unlikely that the mean is 15.
Add up all the values and divide by 8, since there are 8 numbers. Now what do you get?