Question

I have posted the note that the formula should be used, and it is done manually by the formula that is located in the hand writing notes

Additional Problem A researcher collected data on Y and four X-variables: X1, X2, X3, X4, and he wants to obtain a regression model. However, he is not sure if all the four X-variables should be included in the model. He provides you with the information shown below, namely, the SSR obtained when Y was regressed on each subset of X-variables. Also given: SST-100, and that the sample size is n 12. Your task Apply the Forward-Stepwise selection method, with a-to-enter- o.o5, pwise selection method, with a-to-enter 0.05 to determine which X-variables should be in the regression model State which variable entered first, which entered second, etc., then state the set of variables that were selected. Subset of variables SSR Subset of variables SSR X1, X2, X3 X1, X2, X4 X1, X3, X4 X2, X3, X4 X1, X2, X3, X4 80 83 76 82 84 52 48 54 36 75 69 76 74 78 72 X1 X2 X3 X4 X1, X2 X1, X3 X1, X4 X2, X3 X2, X4 X3, x4 NSE(%) Signif,caat at α-to-enter noge f-ratio Oal gelec 乙)se, hi 女 ave 3) /(61e Sig. -D terno nate Selected Xy7Xa e-vb tn the x-vor sith Choose - oto-stot re)っ 2A s wit te Lawvet A ratho Els Se drOp

Answer 1

Solution :

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