In Exercise 12-24 we fit a model to the response PITCH in the heat treating data of
Question:
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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a R 0955 Yes the R using these two regressors is nearly as lar...View the full answer
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Related Book For 
Statistics Unlocking The Power Of Data
ISBN: 9780470601877
1st Edition
Authors: Robin H. Lock, Patti Frazer Lock, Kari Lock Morgan, Eric F. Lock, Dennis F. Lock
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