Answer
See below.
Work Step by Step
The slope of the regression line has the same sign as r (linear regression coefficient). Hence if r is positive, the regression line is increasing, but if r is negative, the regression line is decreasing.
Elementary Statistics (12th Edition)
by Triola, Mario F.
Published by
Pearson
ISBN 10:
0321836960
ISBN 13:
978-0-32183-696-0
Chapter 10 - Correlation and Regression - 10-3 Regression - Basic Skills and Concepts - Page 527: 3
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