The following is a set of coded experimental data on the compressive strength of a particular alloy

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The following is a set of coded experimental data on the compressive strength of a particular alloy at various values of the concentration of some additive:

(a) Estimate the quadratic regression equation ? Y?x = ?0 + ?1x + ?2x2

(b) Test for lack of fit of the model.

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Probability & Statistics For Engineers & Scientists

ISBN: 9780130415295

7th Edition

Authors: Ronald E. Walpole, Raymond H. Myers, Sharon L. Myers, Keying

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