This PowerPoint lesson introduces the ins and outs of cumulative frequency graphs to students. (To see a video made from this lesson, please watch this video: https://youtu.be/GPZrMR9DHXs). Students should know how and why to use cumulative frequency graphs, how to create one from a table of data, how to gain insight into the data from using a cumulative frequency graph, create a data table from a cumulative frequency graph, as well as answer questions about various percentiles, as well as fi