Introduction to Statistical Quality Control
7th Edition
ISBN: 9781118146811
Author: Montgomery, Douglas C.
Publisher: John Wiley & Sons Inc
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Textbook Question
Chapter 4, Problem 50E
Analyze the residuals from the regression model on the patient satisfaction data from Exercise 4.49. Comment on the adequacy of the regression model.
4.49. Table 4E.11 contains the data from a patient satisfaction survey for a group of 25 randomly selected patients at a hospital. In addition to satisfaction, data were collected on patient age and an index that measured the severity of illness.
- (a) Fit a linear regression model relating satisfaction to patient age.
- (b) Test for significance of regression.
- (c) What portion of the total variability is accounted for by the regressor variable age?
TABLE 4E.11
Patient Satisfaction Data
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Chapter 4 Solutions
Introduction to Statistical Quality Control
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