Example

Cumulative Frequency Graph

We will once again use the hottest days data from the Now You Try! activity for frequency tables.

Step 1: Find the cumulative frequency for each class.

making a cumulative frequency table example

Step 2: Draw the \(x\) and \(y\) axes. Label the \(x\) axis with the class boundaries. Use an appropriate scale for the \(y\) axis to represent the cumulative frequencies.

cumulative frequency example label axis

Step 3: Plot the cumulative frequency at each upper class boundary.

cumulative frequency plotting points example

Step 4: Connect adjacent points with line segments. (connect the dots!)

cumulative frequency connect the dots example

To see this done watch the following video: