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Home > CC2 > Chapter 1 > Lesson 1.1.3 > Problem 1-19


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.

  1. Jane’s quiz scores: , , , ,

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


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

  2. The number of cats your teammates have as pets: , , ,

    To find the average, calculate

  3. The number of minutes Pam talked on the phone: , , , , ,

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