Lesson Plan: Grouped Frequency Tables: Estimating the Median Mathematics

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to estimate the median for data presented in a grouped frequency table using cumulative frequency graphs.


Students will be able to

  • recognize that the median can be estimated for grouped data using a cumulative frequency graph (either ascending or descending),
  • estimate the median from an ascending or descending cumulative frequency graph.


Students should already be familiar with

  • calculating the median for a data set,
  • ascending and descending cumulative frequency graphs.


Students will not cover

  • estimating the mode for grouped data.

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