Education Technology

# Activities

• ##### Subject Area

• Math: Statistics: Inferential Statistics

9-12

60 Minutes

• ##### Device
• TI-89 / TI-89 Titanium

TI Connect™

• ##### Accessories

TI Connectivity Cable

• ##### Other Materials
This is Activity 5 from the EXPLORATIONS Book:
Advanced Placement Statistics with the TI-89

## Describing Categorical Data - Advanced Placement

#### Activity Overview

Students categorize data using tables and bar charts. They also determine relative frequencies.

#### Before the Activity

Install the Statistics with List Editor application on the calculator using one of these two methods:

• TI Connect™, a TI Connectivity Cable, and the Unit-to-Unit Link Cable
• TI-Navigator™ "send to class" feature
• See the attached PDF file for detailed instructions for this activity
• Print pages 79 - 83 from the attached PDF file for your class

#### During the Activity

Distribute the pages to the class.

• Group the building height data into three height categories
• Enter the building height data as a list
• Plot a histogram for the data
• Draw a comparative bar chart
• Identify which city has more building in each height category
• Create a matrix with the data
• Determine the number of buildings in one city in a specific height category (joint relative frequency)
• Determine the total number of buildings in a specific height category in all the cities studied (marginal relative frequency)
• Given a condition determine the conditional relative frequencies
• #### After the Activity

Review student results:

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