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

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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Figure 5.12 Graphs of three
second-order surfaces

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Figure 5.13 Contours of E(y) for x2 =
-1,0,1 (complete second-order model)

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Copyright © 2012 Pearson Education, Inc.

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