Education Technology

Middle Grades Math: Boxplots Introduction
by Texas Instruments

Updated on July 30, 2015

Objectives

  • Students will describe the overall pattern of a distribution by its shape, center, and spread.
  • Students will recognize and identify properties of distributions such as symmetry, skewness, and bimodality from boxplots.
  • Students will identify outliers.
  • Students will recognize that moving data past a quartile can affect that quartile’s value.
  • Students will reason abstractly and quantitatively.

Vocabulary

  • boxplot
  • interquartile range, IQR
  • outlier
  • skewness
  • interval
  • range
  • symmetry
  • distribution
  • median
  • quartile

About the Lesson

This lesson involves representing distributions of data using boxplots.

As a result, students will:

  • Develop the reasoning skills to recognize properties of a distribution from its boxplot.
  • Understand the relationship between individual data values and the five-number summary.
  • Move data within a dot plot and observe the changes within the corresponding boxplot to identify particular characteristics that most directly affect the five-number summary.