Lesson Plan: Percentiles and Quartiles
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to compute percentiles and quartiles from a given data set.
Students will be able to
- find the quartiles (including the median) and percentiles from a given discrete data set,
- estimate quartiles (including the median) and percentiles from a continuous data set using a grouped frequency table,
- interpret quartiles and percentiles and measures of location,
- calculate or estimate the interquartile range (IQR) and the range of a discrete or continuous data set and interpret the IQR as a measure of spread,
- calculate or estimate an interpercentile range of a discrete or continuous data set and interpret it as a measure of spread,
- understand when it is not possible to estimate a quartile or percentile using a grouped frequency table.
Students should already be familiar with
- the mean, median, and mode,
- grouped frequency tables,
- class boundaries, class width, and the class midpoint.
Students will not cover
- standard deviation,
- box plots,