
Concept explainers
(a)
ToFind:What type of
(a)

Answer to Problem 12STP
Explanation of Solution
Given:
The scatter plots is having a general trend of the data which is negative.
Thus
The type of correlation is negative.
(b)
To Find: Theregression line for the data.
(b)

Answer to Problem 12STP
Explanation of Solution
Given:
By looking at the graph identify all the points
We get
Now,
Using graphing calculator enter the points to calculate the best fit line of the
We get
Hence, the regression line is
(c)
To Find: The value of
(c)

Answer to Problem 12STP
Explanation of Solution
Given:
Using the regression line
Put
Hence, the value is
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