### Home > MC2 > Chapter 1 > Lesson 1.1.3 > Problem 1-18

1-18.

One of the ideas that you have explored in previous courses is how to describe a set of data. One of the ways that you may have seen before is finding an average (also called a mean). Read the Math Notes box for this lesson to review what a mean is and how to find it. Then find the mean for each set of data below.

Jane’s quiz scores:

, , , , To find the average (mean), add all the values together and divide by the total number of values.

Find:

Divide this total by the number of data values, in this case

. The number of cats your teammates have as pets:

, , , To find the average, calculate

The number of minutes Pam talked on the phone:

, , , , , Look at the strategies in parts (a) and (b).