Lesson: The Mean of a Data Set

In this lesson, we will learn how to find the mean of a set of data and how to use it to find missing data.

Explainer

Q1:

Find the mean of the following set of data: 5.53, 7.74, 8.91, 4.31, 3.22.

Q2:

Determine the mean of three numbers which sum to 42.

Q3:

Find, to the nearest cent, the mean of the set of costs in the table.

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