HW Solutions Stat 29

HW Solutions Stat 29 - t(.998913; 41) = 3.27. If |ti | 3.27...

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t ( . 998913; 41) = 3 . 27. If | t i |≤ 3 . 27 conclude no outliers, otherwise outliers. Con- clude no outliers. b. 2 p/n = 2(4) / 46 = . 1739. Cases 9, 28, and 39. c. X 0 new =[13 05 82 . 0 ] ( X 0 X ) 1 = 3 . 24771 . 00922 . 06793 . 06730 . 00046 . 00032 . 00466 . 00239 . 01771 . 49826 h new, new = . 3267, extrapolation d. DFBETAS DFFITS b 0 b 1 b 2 b 3 D Case 11: . 5688 . 0991 . 3631 . 1900 . 3900 . 0766 Case 17: . 6657 . 4491 . 4711 . 4432 . 0893 . 1051 Case 27: . 6087 . 0172 . 4172 . 2499 . 1614 . 0867 e. Case 11: 1 . 10%, case 17: 1 . 32% , case 27: 1 . 12%. 10.16. b. ( VIF ) 1 =1 . 0086, ( ) 2 . 0196, ( ) 3 . 0144. 10.17. b. ( ) 1 . 6323, ( ) 2 =2 . 0032, ( ) 3 . 0091 10.21. a. ( ) 1 . 305, ( ) 2 . 300, ( ) 3 . 024 b&c. i :1 2 3 ··· 32 33 e i 3 . 181 4 . 042 3 . 060 14 . 335 1 . 396 e ( Y | X 2 ,X 3 ): 26 . 368 2 . 038 31 . 111 6 . 310 5 . 845 e ( X 1 | X 2 3 ): . 330 . 050 . 856 . 201 . 111 e ( Y | X 1 3 ): 18 . 734 17 . 470 8 . 212 12 . 566 8 . 099 e ( X 2 | X 1 3 ): 7 . 537 18 . 226 6 . 993 2 . 401 12 . 888 e ( Y | X 1 2 ): 11 . 542 7 . 756 15 . 022 6 . 732 15 . 100 e ( X 3 | X 1 2 ): 2 . 111 4 . 784 15 . 406 9 . 793 21 . 247 Exp. value: 11 . 926 4 . 812 1 . 886 17 . 591 . 940 10.22. a. ˆ Y 0 = 2 . 0427 . 7120 X 0 1 + . 7474
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