Answer
We have r = 0.5, hence $r^{2} = 0.25$. This implies that least squares line can explain only 25% of the variation in scores, which is less accurate.
Work Step by Step
Given above
The Basic Practice of Statistics 7th Edition
by Moore, David S.; Notz, William I.; Fligner, Michael A.
Published by
W. H. Freeman
ISBN 10:
146414253X
ISBN 13:
978-1-46414-253-6
Chapter 5 - Regression - Chapter 5 Exercises - Page 155: 5.35c
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