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# The New Normal

### Activity Description Students will explore distributions of various census data sets to determine whether it can be reasonably assumed that those data follow a normal distribution, based on students’ analysis of either a histogram or a normal probability plot for each data set. They will then discuss their findings with a partner who analyzed the other type of graph for each data set.

11-12

45-60 minutes

### Learning Objectives

• Students will be able to determine if a distribution is normal based on histograms and on normal probability plots.
• Students will be able to identify which data sets can and cannot be modeled accurately using a normal distribution.

### Materials Required

• The student version of this activity, 14 pages

A graphing calculator, graphing software (e.g., Microsoft Excel), or other graphing technology is optional.

## Teacher Notes

#### Blooms Taxonomy

Analyzing Students will analyze histograms and normal probability plots of various data distributions and evaluate whether a normal distribution can accurately be used as a model for those data.

High School Math

#### Topics

• Histograms
• Normal models
• Normal probability plots

#### Skills Taught

• Estimating values based on histograms and normal probability plots
• Identifying normality in a data set