HW Solutions Stat 27

HW Solutions Stat 27 - 9.18. a. X1 , X3 , X4 9.21. P RESS =...

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9.18. a. X 1 , X 3 , X 4 9.21. PRESS = 760 . 974, SSE = 660 . 657 9.22. a. X 1 X 2 X 3 X 4 1 . 011 . 177 . 320 1 . 344 . 221 1 . 871 1 b. Model-building Validation data set data set b 0 : 127 . 596 130 . 652 s { b 0 } :1 2 . 685 12 . 189 b 1 : . 348 . 347 s { b 1 } : . 054 . 048 b 3 . 823 1 . 848 s { b 3 } : . 123 . 122 MSE :2 7 . 575 21 . 446 R 2 : . 933 . 937 c. MSPR
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