The following is a set of coded experimental data on the compressive strength of a particular alloy
Question:
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.
Transcribed Image Text:
Concentration, Compressive Strength, y 25.2 29.8 31.2 31.7 29.4 27.3 28.7 27.8 10.0 15.0 20.0 25.0 31.1 32.6 29.7 32.3 30.1 32.8 30.0 30.8
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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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