
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:Refer to the following correlation matrix:
Sales
Advertising ($)
Population
Income
Sales
1.000
Advertising ($)
Population
0.187
1.000
0.510
0.125
1.000
Income
0.799
0.047
0.541
1.000
a. Which independent variable has the strongest correlation with the dependent variable?
|(Click to select) •
b. Suppose you could only use two of Advertising ($), Population, and Income in your regression equation to estimate Sales. On the
basis of the correlation matrix above, which would you use?
|(Click to select)·
c. Is there evidence of multicollinearity? If so, where does it occur?
|(Click to select) v
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