Concept explainers
To find: Which is not true about the
Answer to Problem 7PT
Option (b) is the correct one
Explanation of Solution
Given:
(a) r must take a value between
(b) r is measured in inches.
(c) if longer trout tend to also be heavier, then
(d) r would not change if we measured the lengths of the trout in centimeters instead of inches.
(e) r would not change if we measured the weights of the trout in kilograms instead of pounds.
Calculation:
The correlation r is a constant which is independent of units of measurement. Hence, the statement “r is measured in inches" is wrong.
Conclusion:
Therefore, option (e) r is measured in inches
Chapter 3 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
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