Histogram and frequency polygon

 

Body lengths of male and female coyotes

Use the top diagram to explain that a frequency polygon joins the top centres of a histogram's bars.

Explain that the histograms for the male and female coyotes are hard to distinguish since parts of their outlines overlap. The distributions separate better if displayed as frequency polygons.

The coyote data set contains the lengths (cm) of male and female coyotes that were captured in Nova Scotia.