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Logistic 回归

Logistic 回归. SAS 程序. data logitex1; input x n m; cards; 1.5 25 8 2.5 32 13 3.5 58 26 4.5 52 22 5.5 43 20 6.5 39 22 7.5 28 16 8.5 21 12 9.5 15 10 ; run ;. data logitex1i; set logitex1; p=m/n; q=log(p/( 1 -p)); w=n*p*( 1 -p); run ; proc print data=logitex1i; run ;

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Logistic 回归

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  1. Logistic 回归

  2. SAS程序 data logitex1; input x n m; cards; 1.5 25 8 2.5 32 13 3.5 58 26 4.5 52 22 5.5 43 20 6.5 39 22 7.5 28 16 8.5 21 12 9.5 15 10 ; run;

  3. data logitex1i; set logitex1; p=m/n; q=log(p/(1-p)); w=n*p*(1-p); run; procprint data=logitex1i; run; procreg data=logitex1i; model q=x; run; procglm data=logitex1i; model q=x; weight w; run; proclogistic data=logitex1; model m/n=x; run;

  4. LSE 结果

  5. Weighted LSE 结果

  6. Logistic 回归结果

  7. SAS程序 data logitex2; input x3 x1 x2 y; cards; 0 18 850 0 0 21 1200 0 0 23 850 1 0 23 950 1 0 28 1200 1 0 31 850 0 0 36 1500 1 0 42 1000 1 0 46 950 1 0 48 1200 0 0 55 1800 1 0 56 2100 1 0 58 1800 1 1 18 850 0 1 20 1000 0 1 25 1200 0 1 27 1300 0 1 28 1500 0

  8. 1 30 950 1 1 32 1000 0 1 33 1800 0 1 33 1800 1 1 33 1000 0 1 38 1200 0 1 41 1500 0 1 45 1800 1 1 48 1000 0 1 52 1500 1 1 56 1800 1 ; run; proclogistic data=logitex2; model y=x1 x2 x3/selection=stepwise; run;

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