The mean of a data set is the sum of all values in the set divided by the number of values.
8
Practice makes perfect
We are given a table of values showing the number of miles that Jill biked on 9 days.
Miles Biked
5
9
11
10
8
6
7
12
4
We want to find the mean of this data set.
5, 9, 11, 10, 8, 6, 7, 12, 4
The mean of a data set is the sum of all values in the set divided by the number of values. In this case, there are 9 values in the set.
