# Introduction to the Mean

## Opening

# Introduction to the Mean

Watch the second video to see how the students decided to share the apples. As you watch, think about the mathematics that the students use.

- Write an expression for the method they used.

For both methods, the students got the same number of apples. This number is the *mean* of the total number of apples.

The *mean* is a measure of center in a set of numerical data, computed by adding the values in a list and then dividing by the number of values in the list.

VIDEO: Sharing Apples 2