Lesson 1

Lesson 1 Summary

 

In this lesson you investigated the following questions:

• How can an average be determined given a set of data?
• How can a set of data be represented with one number?
• How can data be described in different ways?

Through the Discover and Explore activities you learned that there are three common measures of central tendency—mean, median, and mode. These central tendencies represent the middle value of a given set of data or a typical value that represents the average. You saw this in the examples of hockey player salaries where you learned how to calculate each measure of central tendency.

 

Finally, you learned that the mean, median, and mode can each be used to describe the data in different ways and each is dependent on the situation. In the next lesson you will use these measures in relation to outliers.