What is the coefficient of correlation for these data?       -0.7839     0.8854     0.7839     -0.8854

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Polynomial Functions
Section3.5: Mathematical Modeling And Variation
Problem 2ECP
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A candy bar manufacturer is interested in trying to estimate how sales are influenced by the price of their product. To do this, the company randomly chooses 6 small cities and offers the candy bar at different prices. Using candy bar sales as the dependent variable, the company will conduct a simple linear regression on the data below:

 

City

Price ($)

Sales

River City

1.30

100

Hudson

1.60

90

Ellsworth

1.80

90

Prescott

2.00

40

Rock Elm

2.40

38

Stillwater

2.90

32

 

What is the coefficient of correlation for these data?

 

   

-0.7839

   

0.8854

   

0.7839

   

-0.8854

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