Figure 4.9 Graphs of 1 + 2x1 – x2 + x1x2 for x2 = 0,1,2
Bạn đang xem bản rút gọn của tài liệu. Xem và tải ngay bản đầy đủ của tài liệu tại đây (2.63 MB, 65 trang )
Copyright © 2012 Pearson Education, Inc.
4- 29
Figure 4.10 Examples of nointeraction and interaction models
Copyright © 2012 Pearson Education, Inc.
4- 30
Figure 4.11 MINITAB regression printout
for grandfather clock model with interaction
Copyright © 2012 Pearson Education, Inc.
4- 31
Section 4.11
A Quadratic
(Second-Order)
Model with a
Quantitative
Predictor
Copyright © 2012 Pearson Education, Inc. All rights reserved.
Figure 4.12 Graphs for two
quadratic models
Copyright © 2012 Pearson Education, Inc.
4- 33
Copyright © 2012 Pearson Education, Inc.
4- 34
Copyright © 2012 Pearson Education, Inc.
4- 35
Figure 4.13 SPSS scatterplot for
data of Example 4.7
Copyright © 2012 Pearson Education, Inc.
4- 36
Figure 4.14 SPSS output for
quadratic model of Example 4.7
Copyright © 2012 Pearson Education, Inc.
4- 37
Figure 4.15 MINITAB graph of least
squares fit for the quadratic model
Copyright © 2012 Pearson Education, Inc.
4- 38
Figure 4.16 Potential misuse of
quadratic model
Copyright © 2012 Pearson Education, Inc.
4- 39
