Describing and comparing distributions

To describe a distribution of quantitative data, we talk about its shape, center, and spread. We also use these features to compare distributions of data.

Shapes of distributions

Shape of distributions

Clusters, gaps, peaks & outliers

Clusters, gaps, & peaks in data distributions

Comparing distributions with dot plots (example problem)

Comparing distributions

Comparing dot plots, histograms, and box plots

Comparing data displays

Example: Comparing distributions

Comparing data distributions

Comparing center and spread