Concept explainers
To find: the
Answer to Problem 76E
The correlation between height and arm span is Greater than zero (option a)
Explanation of Solution
Given:
- Greater than zero
- Less than zero
- 0.93.
- 6.4.
- Can’t tell without seeing the data.
Calculation:
Measurements on young children in Mumbai, India, found a least-squares line for predicting height Y from arm span X.
Measurements are in centimeters (cm).
From the given regression line, we can see that the slope of regression line is 0.93 which is positive.
We know that,
Where ris the
In the given regression line, as the sign of the slope is positive, hence, we can say that the sign of the correlation coefficient is also positive.
Conclusion:
Therefore, option (a) is the correct one.
Chapter 3 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Basic Business Statistics, Student Value Edition
Introductory Statistics (2nd Edition)
Intro Stats
Intro Stats, Books a la Carte Edition (5th Edition)
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