A second course in statistics regression analysis 7th by mendenhall ch05
Bạn đang xem bản rút gọn của tài liệu. Xem và tải ngay bản đầy đủ của tài liệu tại đây (2.37 MB, 64 trang )
Chapter 5
Principles of
Model
Building
Copyright © 2012 Pearson Education, Inc. All rights reserved.
Section 5.1
Introduction:
Why Model
Building Is
Important
Copyright © 2012 Pearson Education, Inc. All rights reserved.
Section 5.2
The Two Types
of Independent
Variables:
Quantitative
and Qualitative
Copyright © 2012 Pearson Education, Inc. All rights reserved.
Section 5.3
Models with a
Single
Quantitative
Independent
Variable
Copyright © 2012 Pearson Education, Inc. All rights reserved.
Figure 5.1 Modeling exam score,
y, as a function of study time, x
Copyright © 2012 Pearson Education, Inc.
5- 5
Copyright © 2012 Pearson Education, Inc.
5- 6
Copyright © 2012 Pearson Education, Inc.
5- 7
Copyright © 2012 Pearson Education, Inc.
5- 8
Figure 5.2 Graphs for two
second-order polynomial models
Copyright © 2012 Pearson Education, Inc.
5- 9
Figure 5.3 Example of the use of a
quadratic model
Copyright © 2012 Pearson Education, Inc.
5- 10
Figure 5.4 Graphs of two
third-order polynomial models
Copyright © 2012 Pearson Education, Inc.
5- 11
Copyright © 2012 Pearson Education, Inc.
5- 12
Copyright © 2012 Pearson Education, Inc.
5- 13
Figure 5.5 MINITAB scatterplot for
power load data
Copyright © 2012 Pearson Education, Inc.
5- 14
Figure 5.6 MINITAB output for
third-order model of power load
Copyright © 2012 Pearson Education, Inc.
5- 15
Figure 5.7 MINITAB output for
second-order model of power load
Copyright © 2012 Pearson Education, Inc.
5- 16
Section 5.4
First-Order
Models with
Two or More
Quantitative
Independent
Variables
Copyright © 2012 Pearson Education, Inc. All rights reserved.
Figure 5.8 Response surface for
first-order model with two quantitative
independent variables
Copyright © 2012 Pearson Education, Inc.
5- 18
Copyright © 2012 Pearson Education, Inc.
5- 19
Figure 5.9 Contour lines of E(y) for
x2 = 1,2,3 (first-order model)
Copyright © 2012 Pearson Education, Inc.
5- 20
Section 5.5
Second-Order
Models with
Two or More
Quantitative
Independent
Variables
Copyright © 2012 Pearson Education, Inc. All rights reserved.
Figure 5.10 Response surface for
an interaction model (second-order)
Copyright © 2012 Pearson Education, Inc.
5- 22
Figure 5.11 Contour lines of E(y) for x2 =
1,2,3 (first-order model plus interaction)
Copyright © 2012 Pearson Education, Inc.
5- 23
Copyright © 2012 Pearson Education, Inc.
5- 24
Copyright © 2012 Pearson Education, Inc.
5- 25
