rrelation coefficient between advertising dollars spent and plained by the relationship between sales and advertising o

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 9PT
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Assume the correlation coefficient between advertising dollars spent and sales is .78. How much of the variability in
sales is explained by the relationship between sales and advertising dollars?
a. 39.16%
b. 60.84%
c. 78%
d. 22%
Transcribed Image Text:Assume the correlation coefficient between advertising dollars spent and sales is .78. How much of the variability in sales is explained by the relationship between sales and advertising dollars? a. 39.16% b. 60.84% c. 78% d. 22%
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