Histograms, Frequency Polygons, and Time Series Graphs · Try It 5

We will construct an overlay frequency polygon comparing the scores from with the students’ final test scores in algebra.

$$\begin{array}{cccc}\text{Frequency Distribution for Algebra Final Test Scores}& & & \\ \text{Lower Bound}& \text{Upper Bound}& \text{Frequency}& \text{Cumulative Frequency}\\ \text{49.5}& \text{59.5}& \text{10}& \text{10}\\ \text{59.5}& \text{69.5}& \text{5}& \text{15}\\ \text{69.5}& \text{79.5}& \text{40}& \text{55}\\ \text{79.5}& \text{89.5}& \text{35}& \text{90}\\ \text{89.5}& \text{99.5}& \text{10}& \text{100}\end{array}$$

OpenStax, Introductory Statistics 2e · §2.2 Histograms, Frequency Polygons, and Time Series Graphs · Try It 5