Histograms, Frequency Polygons, and Time Series Graphs · Try It 4

Construct a frequency polygon of U.S. Presidents’ ages at inauguration shown in.

$$\begin{array}{cc}\text{Age at Inauguration}& \text{Frequency}\\ \text{41.5–46.5}& \text{4}\\ \text{46.5–51.5}& \text{11}\\ \text{51.5–56.5}& \text{14}\\ \text{56.5–61.5}& \text{9}\\ \text{61.5–66.5}& \text{4}\\ \text{66.5–71.5}& \text{2}\end{array}$$

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Introductory Statistics 2e · §2.2 Histograms, Frequency Polygons, and Time Series Graphs · Try It 4