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The data used to fit the model in Exercise 1 are presented

Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi ISBN: 9780073401331 38

Solution for problem 3E Chapter 8.1

Statistics for Engineers and Scientists | 4th Edition

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Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi

Statistics for Engineers and Scientists | 4th Edition

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Problem 3E

The data used to fit the model in Exercise 1 are presented in the following table, along with the residuals and the fitted values. Plot the residuals versus the fitted values. Does the plot indicate that the linear model is reasonable? Explain.

Strength

Manganese

Thickness

Residual

Fitted Value

47.7

7.4

8.0

-0.111

47.811

50.9

8.8

10.0

0.709

51.609

51.7

8.8

10.0

0.091

51.609

51.9

8.8

10.0

0.291

51.609

50.0

8.1

7.1

-0.517

50.517

50.5

8.1

9.0

0.790

49.710

50.0

8.1

7.1

-0.517

50.517

49.7

8.1

9.0

-0.010

49.710

50.6

8.1

9.0

0.890

49.710

47.7

7.2

7.2

0.214

47.486

47.1

7.3

7.8

-0.464

47.564

45.0

7.3

11.8

-0.864

45.864

47.6

7.3

8.0

0.121

47.479

45.7

7.3

11.8

-0.164

45.864

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Chapter 8.1, Problem 3E is Solved
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Textbook: Statistics for Engineers and Scientists
Edition: 4
Author: William Navidi
ISBN: 9780073401331

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The data used to fit the model in Exercise 1 are presented

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