Statistics for Engineers and Scientists
4th Edition
ISBN: 9780073401331
Author: William Navidi Prof.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 9.5, Problem 7E
The article “An Investigation into the Ball Burnishing of Aluminium Alloy 6061-T6” (M. El-Axir. J Engineering Manufacture. 2007:1733–1742) presents the results of study that investigated the effects of three burnishing factors on the reduction in diameter of the workpiece (in μm). The factors are A: Burnishing speed, B: Burnishing force, and C: Burnishing feed. The results presented in the following table form a 23 factorial design (some additional results are omitted).
- a. Compute estimates of the main effects and the interactions.
- b. Is it possible to compute an error sum of squares? Explain.
- c. Arc any of the interactions among the larger effects? If so, which ones?
- d. Someone claims that the additive model holds. Do the results tend to support this statement? Explain.
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Chapter 9 Solutions
Statistics for Engineers and Scientists
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