Concept explainers
(a)
To interpret the slope of the regression line.
(a)
Explanation of Solution
It is given in the question the regression line that,
Thus as we know that the slope is coefficient of x in the least square regression equation and represents the average increase or decrease of y per unit of x . Thus, the slope is,
This then implies that on average, the number of wins increase by
(b)
To explain does the value of the y -intercept have meaning in this context and if so then interpret the y -intercept.
(b)
Answer to Problem 41E
It does not have meaning.
Explanation of Solution
It is given in the question the regression line that,
As we know that, the y -intercept is the constant in the least square regression equation and represents the average y -value when x is zero. Thus, the y -intercept is as:
This then implies that there are
Chapter 3 Solutions
PRACTICE OF STATISTICS F/AP EXAM
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