Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley
ISBN 10: 1118583191
ISBN 13: 978-1-11858-319-7

Chapter 1 - Linear Functions and Change - 1.6 Fitting Linear Functions to Data - Exercises and Problems for Section 1.6 - Exercises and Problems - Page 50: 4

Answer

This value of $r$ is unreasonable.

Work Step by Step

$r=-0.9$ means that the data is strongly correlated to a downward sloping line, since $-0.9$ is close to $-1$. However, the data correlation isn't strong, since the deviation of the points from the line is large. Therefore, the $r$ estimate isn't great.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.

GradeSaver will pay $15 for your literature essays
GradeSaver will pay $25 for your college application essays
GradeSaver will pay $50 for your graduate school essays – Law, Business, or Medical
GradeSaver will pay $10 for your Community Note contributions
GradeSaver will pay $500 for your Textbook Answer contributions