# Lesson Plan: Interquartile Range Mathematics • 6th Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to find the interquartile range given different representations of data.

#### Objectives

Students will be able to

• calculate the interquartile range and understand its use in measuring the spread of data,
• calculate each of the quartiles of a data set and the differences between the quartiles and understand how they measure values that split up the data,
• understand that the interquartile range should contain about half of the values in the data set,
• calculate the interquartile range when given the data set and when given the quartiles,
• find the value of an unknown quartile given the interquartile range and either the lower or upper quartile.

#### Prerequisites

Students should already be familiar with

• data sets and tables,
• measures of central tendency and the range.

#### Exclusions

Students will not cover

• outliers,
• box-and-whisker plots,
• comparing multiple data sets using their interquartile ranges.