In Example 12.8 a case is made for eliminating x, powder temperature, from the model since the
Question:
(a) Reduce the model by eliminating xi, thereby producing a full and restricted (or reduced) model and compare them on the basis of R2adj.
(b) Compare the full and restricted models using the width of the 95% prediction intervals on a new observation. The "better" of the two models would be that with the "tightened" prediction intervals. Use the average of the width of the prediction intervals.
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Related Book For
Probability & Statistics For Engineers & Scientists
ISBN: 9780130415295
7th Edition
Authors: Ronald E. Walpole, Raymond H. Myers, Sharon L. Myers, Keying
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