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Unformatted text preview: effect. Accordingly for this problem: (b) Formulate a hypothesis and a test statistic that will get at the same question “did anything happen?” when each input was changed. (c) Apply that test to the injection molding data and compare the results to those you have obtained using ANOVA. (d) Comment on how the results compare and explain the differences and/or similarities between the two methods. The experimental data are posted with this assignment in an Excel file , `6-1.xls' . Problem 2 Montgomery 12–2 Montgomery 12–3 Problem 3 It was stated in class (and in Montgomery section 12–5.1) that the sum of squares for an effect A is given by: where “contrast coefficients” refers to the values used for the inputs (–1 and +1 for our coded system). Show why this relationship is correct. Problem 4 May and Spanos problem 7.5...
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- Spring '08
- Statistics, injection molding data