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Statistics Homework Solutions 201

# Statistics Homework Solutions 201 - 300-40-20 20 40 60 80...

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SUPPLEMENTARY EXERCISES FOR CHAPTER 8 201 (e) S p e e d S P * S P p a P p a e u a e u e s u e s d e s Vars R-Sq R-Sq(adj) C-p S d e 2 2 e 1 61.5 60.1 92.5 0.68318 X 1 60.0 58.6 97.0 0.69600 X 2 76.9 75.2 47.1 0.53888 X X 2 74.9 73.0 53.3 0.56198 X X 3 90.3 89.2 7.9 0.35621 X X X 3 87.8 86.4 15.5 0.39903 X X X 4 92.0 90.7 4.8 0.33050 X X X X 4 90.5 89.0 9.2 0.35858 X X X X 5 92.2 90.6 6.0 0.33205 X X X X X (f) The model containing the dependent variables Speed, Pause, Speed 2 and Pause 2 has both the lowest value of C p and the largest value of adjusted R 2 . 7. 100 200
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Unformatted text preview: 300 400-80-60-40-20 20 40 60 80 Linear Model Fitted Value Residual The residual plot shows an obvious curved pattern, so the linear model is not appropri-ate. 100 200 300 400-20-10 10 20 Quadratic Model Fitted Value There is no obvious pattern to the residual plot, so the quadratic model appears to fit well....
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