Hypothesis Testing

1
Hypothesis Testing

• A General Approach

2
Reduced Model Approach
3
Example

• Cars
• Mpg versus Engine and Weight
• Use car_test.sav

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Full Model
5
Reduced Model
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F Value

• F (360.631 - 268.799)/5.719 16.06

7
3 Independent Variable Example

• Cars
• Mpg versus Engine, Weight, Horse
• Use car_test1.sav

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Model Setup
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Full Model
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Reduced Model
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F Value

• F (427.229 - 426.413)/10.660 .077

12
Bootstrapping and Hypothesis Testing
13
Example In Class

• F (407.24 - 388.90)/(388.90/40) 1.89
• F table 4.08
• Fail to reject.

14
ANCOVA Bootstrapping

• In class discussion