Lesson plan

# 8. Compare two populations using the mean and mean absolute deviation (MAD) (FP)

teaches Common Core State Standards CCSS.Math.Content.7.SP.B.3 http://corestandards.org/Math/Content/7/SP/B/3
teaches Common Core State Standards CCSS.Math.Content.7.SP.B.4 http://corestandards.org/Math/Content/7/SP/B/4
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4

## You have saved this lesson plan!

Here's where you can access your saved items.

Dismiss

You'll gain access to interventions, extensions, task implementation guides, and more for this lesson plan.

Lesson objective: Compare two populations using the mean and mean absolute deviation (MAD).

Students bring prior knowledge of displaying numerical data in plots on a number line, including dot plots, histograms, and box plots from 6.SP.B.4. This prior knowledge is extended to a visual and numerical understanding of data as students compare data from two populations. A conceptual challenge students may encounter is comparing data from one population to another at a singular point instead of comparing the measures of center and variability of the two populations.

The concept is developed through work with dot plots and box plots, which allow for a visual understanding and comparison of multiple populations.

This work helps students deepen their understanding of operations because they are challenged to compute measures of center and variability to provide a more detailed understanding of data.

Students engage in Mathematical Practice 4 (model with mathematics) as they utilize different forms of visual representations to more deeply analyze data of two populations.

Key vocabulary:

• mean
• median
• mean absolute deviation (MAD)
• interquartile range (IQR)
• box plot
• dot plot

Special materials needed:

• None