Concept explainers
To find: the residual of child
Answer to Problem 78E
The child's residual is -3.2cm
Explanation of Solution
Given:
- -3.2 cm.
- -2.2 cm.
- -1.3 cm.
- 3.2 cm
- 62.2 cm.
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).
It is given that one child in Mumbai study had height 59 cm and arm span 60 cm.
That is, the observed height of one child is 59 cm.
That is,
The predicted height,
The residual of the child height is calculated as follows:
Conclusion: Hence, the child's residual is -3.2cm (option (a))
Chapter 3 Solutions
The Practice of Statistics for AP - 4th Edition
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