Introductory Statistics (10th Edition)
10th Edition
ISBN: 9780321989178
Author: Neil A. Weiss
Publisher: PEARSON
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Textbook Question
Chapter B.5, Problem 97E
Answer true or false to each of the following statements and explain your answers.
- a. The forward selection method and backward elimination method always give the same final regression equation.
- b. In stepwise regression, to avoid the possibility of removing a predictor variable entered at the same step, we must have tenter ≥ tremove.
- c. At each step of the forward selection method, the number of regression equations that must be obtained is equal to the number of predictor variables that have not been entered into the regression equation.
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variables. Possible independent variables include the family income, family size, whether there is a senior adult parent living with the
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1
2
3
4
5
6
7
8
9
10
2,300
2,300
3,400
3,360
3,000
2,900
4,100
2,250
4,200
2,800
Step
Constant
Family Size
t-statistic
p-value
Income
t-statistic
p-value
S
R-Sq
R-Sq(adj)
Income
(000s)
60.8
68.4
104.5
89.3
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89.6
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2
3
3
1
4
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2
5
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Chapter B Solutions
Introductory Statistics (10th Edition)
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