The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 7 - Exploring Data: Part I Review - Supplementary Exercises - Page 198: 7.53c

Answer

The scatter plot of the data is below. $\hat y (with\ outlier) = 31.12 - 0.4132 x$ $\hat y (without\ outlier) = 21.46 - 0.8403 x$ The outlier influences the regression line as it does not follow the trend of other data; hence, the direction of the line is changed to minimize the sum of squares.

Work Step by Step

Insert scatterplot in Excel from the charts option, and then format it.
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.