Concept explainers
To find: the conclusion of the given data
Answer to Problem 8PT
Option (e) is the correct one
Explanation of Solution
Given:
The least-squares regression line is
Mean 0 and standard deviation 1
(a) The
(b) The intercept will also be
(c) The intercept will be 1.0.
(d) The correlation will be 1.0.
(e) The correlation will also be
Calculation:
The slope of the least - square regression is defined as follows:
Substituting the standard deviations of standardized X and Y variables, we get
In other words, the slope is equal to the correlation.
Here, slope of the least-squares regression line is given as
Conclusion:
Therefore, the conclusion will be the correlation which is
Chapter 3 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Essentials of Statistics (6th Edition)
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