Fit a model to the response PITCH in the heat treating data of Exercise 12-10 using new

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Fit a model to the response PITCH in the heat treating data of Exercise 12-10 using new regressors x1 SOAKTIME SOAKPCT and x2 DIFFTIME DIFFPCT.

(a) Calculate the R2 for this model and compare it to the value of R2 from the original model in Exercise 12-10.
Does this provide some information about which model is preferable?

(b) Plot the residuals from this model versus and on a normal probability scale. Comment on model adequacy.

(c) Find the values of Cook’s distance measure. Are any observations unusually influential?

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Applied Statistics And Probability For Engineers

ISBN: 9780470053041

5th Edition

Authors: Douglas C. Montgomery, George C. Runger

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Question Posted: Nov 07, 2024 07:00 AM

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Fit a model to the response PITCH in the heat treating data of Exercise 12-10 using new

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Applied Statistics And Probability For Engineers

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