Describing Bivariate Data (Two Quantitative Variables)

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Statistics: Inferential Statistics

Level

9-12

Activity Time

60 Minutes

Software

TI Connect™

TI Calculator

TI-84 series

Other Materials

This is Activity 2 from the EXPLORATIONS Book:
Statistics Handbook for the TI-83

Resource Types

Lessons

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Describing Bivariate Data (Two Quantitative Variables)

Activity Overview

Students explore the relationship between two quantitative variables in bivariate data using various x-y plots. They compare the relationships for several categories on the same plot. Students calculate the correlation coefficient to measure the strength and direction of the linear relationship that might exist between two variables.

Before the Activity

See the attached PDF file for detailed instructions for this activity

Print pages 23 - 26 from the attached PDF file for your class

During the Activity

Distribute the pages to the class.

Follow the Activity procedures:

Enter the distance versus time World Track records data for men and women (bivariate data) as a lists

Graph data as a scatter plot with each gender indicated by a different mark

Observe the linear relationship

Enter the automobile horsepower versus mileage data as lists

Graph the data as a scatter plot

Observe the inverse relationship

Determine the correlation coefficient

Graph building data versus year of completion data as a scatter plot

Note that the scatter is not linear and the correlation coefficient value is low

Graph the Olympic Marathon year versus time data as a x-y plot

Observe the time taken to run the marathon is decreasing

Use the given sample means UCL, center line, and LCL data, plot a x-bar control chart

After the Activity

Review student results:

As a class, discuss questions that appeared to be more challenging

Re-teach concepts as necessary

Download Files

Download All Files (ZIP)

Before the Activity Files

Teacher Notes Appendix A PDF Teacher Notes PDF

Author

Texas Instruments

Alignment

Standards Alignment

Textbook Alignment

Subject Area

Math: Statistics: Inferential Statistics

Level

9-12

Activity Time

60 Minutes

Software

TI Connect™

TI Calculator

TI-84 series

Other Materials

This is Activity 2 from the EXPLORATIONS Book:
Statistics Handbook for the TI-83

Resource Types

Lessons

Report an Issue

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Describing Bivariate Data (Two Quantitative Variables)

Describing Bivariate Data (Two Quantitative Variables)

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