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Figure 5.9 Contour lines of E(y) for x2 = 1,2,3 (first-order model)

Figure 5.9 Contour lines of E(y) for x2 = 1,2,3 (first-order model)

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Section 5.5
Second-Order
Models with
Two or More
Quantitative
Independent
Variables
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Figure 5.10 Response surface for
an interaction model (second-order)

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Figure 5.11 Contour lines of E(y) for x2 =
1,2,3 (first-order model plus interaction)

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Copyright © 2012 Pearson Education, Inc.

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