Statistics for Engineers and Scientists
Statistics for Engineers and Scientists
4th Edition
ISBN: 9780073530789
Author: Navidi
Publisher: MCG
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Types of Bias
Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative p…
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Chapter 9.5, Problem 6E

A metal casting process for the production of turbine blades was studied. Three factors were varied. They were A: the temperature of the metal, B: the temperature of the mold, and C: the pour speed. The outcome was the thickness of the blades, in mm. The results are presented in the following table.

Chapter 9.5, Problem 6E, A metal casting process for the production of turbine blades was studied. Three factors were varied.

  1. a. Compute estimates of the main effects and the interactions.
  2. b. Is it possible to compute an error sum of squares? Explain.
  3. c. Plot the estimates on a normal probability plot. Does the plot show that some of the factors influence the thickness? Explain.
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Chapter 9 Solutions

Statistics for Engineers and Scientists

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