Education Technology

# Statistics and Probability / Mean as Fair Share

Activity 4 of 24
This lesson introduces students to mean as a way to describe the center of a set of data. Often called the average, the mean can also be visualized as “leveling out” the data in the sense of “fair share”.

## Planning and Resources

Objectives
Students interpret “fair share” as totaling all of the data and sharing the total equally, that is dividing the sum of the data values by the number of data values, which leads to the standard definition of mean.

Vocabulary
mean

Standard:

## Lesson Snapshot

#### Understanding

This lesson supports the transition from representing data in bar graphs to representing the data on a number line.

### What to look for

The mean is often called the average. Students should recognize the mean as a convenient summary statistic that is used extensively in the world around them.

### Sample Assessment

What is the mean of the numbers: 4, 8, 3, 2, 5, 8, 12?
a. 4
b. 5
c. 6
d. 7
e. 8