Concept explainers
a.
To find: The equation of the least square regression line.
a.
Answer to Problem 26E
The equation of the regression line is
Explanation of Solution
Given:
The output is:
The general equation of the regression line is written as:
Using the provided information, the general equation of the regression line could be written as:
Thus, the equation of the regression line is
b.
To explain: The linearity of the model using the residual plot.
b.
Explanation of Solution
In the residual plot, no pattern could be seen and it is centered around the 0 which implies that it is a good linear model.
c.
To explain: The
c.
Explanation of Solution
Here,
The value of s shows that the average number of errors being made are 0.6000309.
Chapter 7 Solutions
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