# Activities

• • • ##### Subject Area

• Math: Algebra I: Data Analysis
• Math: Elementary Math: Probability, Statistics and Data Analysis
• Math: Middle Grades Math: Statistics and Probability
• Math: PreAlgebra: Probability, Statistics and Data Analysis
• Math: Statistics: Data Analysis

• ##### Author 6-8

60 Minutes

• ##### Device
• TI-83 Plus Family
• TI-84 Plus
• TI-84 Plus Silver Edition

TI Connect™

• ##### Accessories

CBR™/CBR 2™
TI Connectivity Cable

• ##### Other Materials
This is Activity 9 from the EXPLORATIONS Book: Math and Science in Motion: Activities for Middle School.

## Measure Up!

#### Activity Overview

In this activity, students' create a plot showing the heights of some of their classmates. They determine the extreme values and the median for the height data and construct a box-and-whisker plot to summarize the height statistics.

#### Before the Activity

• Connect the CBR™ to the calculator using the link cable
• Run the Ranger program on the calculator
• See the attached PDF file for detailed instructions for this activity
• Print pages 39 - 44 from the attached PDF file for your class
• #### During the Activity

Distribute the pages to your class.

• Prepare the CBR for data collection
• Detach the CBR from the calculator and hold it with the detector pointing toward the ground, 0.5 meter above the head of the tallest student
• A group of students walk beneath the CBR one at a time, as the CBR records motion data
• Collect data and re-attach the CBR to the calculator
• Examine the distance values in the graph and record the peak y-values
• Find the median, lower quartile and upper quartile values
• Construct a box-and-whisker plot and summarize the data
• #### After the Activity

Students' will collect data, analyze the results, and answer questions under the "Looking at the Results" section.

Review student results

• As a class, discuss questions that appeared to be more challenging
• Re-teach concepts as necessary