Concept explainers
(a)
To match the r’s given in the question that best describes the
(a)
Answer to Problem 4.18E
Explanation of Solution
The scatterplot slopes upwards, thus r has to be positive. The points are close together thus |r| has to be
(b)
To match the r’s given in the question that best describes the scatterplot.
(b)
Answer to Problem 4.18E
Explanation of Solution
The scatterplot slopes downwards, thus r has to be negative. The points are very far apart thus |r| has to be close to zero:
(c)
To match the r’s given in the question that best describes the scatterplot.
(c)
Answer to Problem 4.18E
Explanation of Solution
The scatterplot slopes upwards, thus r has to be positive. The points are relatively close together thus |r| has to be close to between
(d)
To match the r’s given in the question that best describes the scatterplot.
(d)
Answer to Problem 4.18E
Explanation of Solution
The scatterplot shows no pattern thus:
(e)
To match the r’s given in the question that best describes the scatterplot.
(e)
Answer to Problem 4.18E
Explanation of Solution
The scatterplot slopes downwards, thus r has to be negative. The points are very far apart thus |r| has to be close to
Chapter 4 Solutions
Statistics Through Applications
Additional Math Textbook Solutions
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