# Activities

• • • ##### Subject Area

• Math: Statistics: Inferential Statistics

• ##### Author 9-12

60 Minutes

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

TI Connect™

• ##### Accessories

TI Connectivity Cable

• ##### Other Materials
This is Activity 4 from the EXPLORATIONS Book:
EasyData Activities: Modeling Algebraic Functions with Data Collection Activities.

The following material is required for this activity:
• Firm piece of cardboard/wood

Measure Up

#### Activity Overview

Students compare their height with the average height of students in the classroom. They create histograms to analyze the data, and construct boxplots to summarize the height statistics.

#### Before the Activity

• Connect the calculator to the CBR 2™
• See the attached PDF file for detailed instructions for this activity
• Print pages 23 - 34 from the attached PDF file for the classroom
• Set up the calculator for data collection
• #### During the Activity

Distribute the pages to the students.

• Set up a long wooden board at a certain height such that the student can just stand beneath it
• Position the CBR under the board such that it can take readings without any obstructions
• Using the calculator and the CBR, measure the heights of 12 students and the teacher
• Graph all the data points and view their coordinates
• Observe that the plots are Distance versus Events
• Understand that Events stand for independent variable and Distance stands for dependent variable
• Sort the data in the distance list in ascending order
• Create a box-and-whisker plot
• Line the data on the number line on the worksheet, and identify the median and the quartiles
• Use the calculator to verify the answers
• Analyze the boxplots and the whiskers
• Present the data in a histogram
• Answer the questions listed on the student worksheet
• #### After the Activity

• Students analyze the results of the case analysis questions on the student worksheet
• Review student results
• As a group, discuss questions that appeared to be more challenging
• Re-teach concepts as necessary