Homework Help is Here – Start Your Trial Now!
Math
Statistics
By various methods of selecting variables, 7 good models are considered with following numerical results: 7. Table 1 Rod 'adj Model Terms R Cp 0.666 0.635 142.5 9.0771 I4 0.675 0.645 138.7 8.9639 3 I1, X2 0.979 0.974 2.7 2.4065 4. X1, X4 0.972 0.967 5.5 2.7343 I1, X2, X3 0.982 0.976 3.0 2.3121 I1, 12, X4 0.982 0.976 3.0 2.3087 7 X1,..., X4 0.982 0.974 5.0 2.4460 a) Choose the 'best' model from the above 7 models and give a suitable reason. b) The first two models in Table 1 are first two best models with one independent variable r2 and r4, respectively. If we consider the model with x2 and x4 as independent variables, we have R2 = 0.68, R = 0.616, and s = 9.321. It shows %3D adj that this model is much worse than the model with r1 and r2 and the model with x1 and x4 as independent variables in Table 1. Explain this phenomenon. c) What is Red? Explain. 'pred- d) Do you think Red from model 7 is lower or higher than Red from model 3? Motivate your answer. 'pred 'pred 1.

By various methods of selecting variables, 7 good models are considered with following numerical results: 7. Table 1 Rod 'adj Model Terms R Cp 0.666 0.635 142.5 9.0771 I4 0.675 0.645 138.7 8.9639 3 I1, X2 0.979 0.974 2.7 2.4065 4. X1, X4 0.972 0.967 5.5 2.7343 I1, X2, X3 0.982 0.976 3.0 2.3121 I1, 12, X4 0.982 0.976 3.0 2.3087 7 X1,..., X4 0.982 0.974 5.0 2.4460 a) Choose the 'best' model from the above 7 models and give a suitable reason. b) The first two models in Table 1 are first two best models with one independent variable r2 and r4, respectively. If we consider the model with x2 and x4 as independent variables, we have R2 = 0.68, R = 0.616, and s = 9.321. It shows %3D adj that this model is much worse than the model with r1 and r2 and the model with x1 and x4 as independent variables in Table 1. Explain this phenomenon. c) What is Red? Explain. 'pred- d) Do you think Red from model 7 is lower or higher than Red from model 3? Motivate your answer. 'pred 'pred 1.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question
By various methods of selecting variables, 7 good models are considered with following numerical results: 7. Table 1 Model Rad Terms R2 Cp 142.5 1 0.666 0.635 9.0771 X4 0.675 0.645 138.7 8.9639 3 X1, 12 0.979 0.974 2.7 2.4065 X1, X4 0.972 0.967 5.5 2.7343 X1, 12, 13 0.982 0.976 3.0 2.3121 X1, 12, 14 0.982 0.976 3.0 2.3087 X1,..., x4 0.982 0.974 5.0 2.4460 a) Choose the 'best' model from the above 7 models and give a suitable reason. b) The first two models in Table 1 are first two best models with one independent variable x2 and x4, respectively. If we consider the model with r2 and x4 as independent variables, we have R2 = 0.68, R = 0.616, and s = 9.321. It shows that this model is much worse than the model with r1 and r2 and the model with x1 and x4 as independent variables in Table 1. Explain this phenomenon. c) What is Rrea? Explain. d) Do you think R2ed from model 7 is lower or higher than Rd from model 3? Motivate your answer. pred
Transcribed Image Text:By various methods of selecting variables, 7 good models are considered with following numerical results: 7. Table 1 Model Rad Terms R2 Cp 142.5 1 0.666 0.635 9.0771 X4 0.675 0.645 138.7 8.9639 3 X1, 12 0.979 0.974 2.7 2.4065 X1, X4 0.972 0.967 5.5 2.7343 X1, 12, 13 0.982 0.976 3.0 2.3121 X1, 12, 14 0.982 0.976 3.0 2.3087 X1,..., x4 0.982 0.974 5.0 2.4460 a) Choose the 'best' model from the above 7 models and give a suitable reason. b) The first two models in Table 1 are first two best models with one independent variable x2 and x4, respectively. If we consider the model with r2 and x4 as independent variables, we have R2 = 0.68, R = 0.616, and s = 9.321. It shows that this model is much worse than the model with r1 and r2 and the model with x1 and x4 as independent variables in Table 1. Explain this phenomenon. c) What is Rrea? Explain. d) Do you think R2ed from model 7 is lower or higher than Rd from model 3? Motivate your answer. pred
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS