reg6_17.sas

黄燕 吴平《SAS统计分析及应用》 书中一些例子的SAS程序代码

proc reg data=data_prg.reg6_17;
model y=x1-x4/selection=stepwise noint;
model y=x1 x3 x4/noint p r collin;
run;
data data_prg.reg6_17c;
set data_prg.reg6_17;
x11=x1*x1; 
x22=x2*x2; 
x33=x3*x3; 
x44=x4*x4;
run;
proc reg data=data_prg.reg6_17c;
model y=x1-x4 x11 x22 x33 x44/selection=stepwise noint;
model y=x1 x3 x4 x33 /selection=stepwise noint p r collin;
run;
data data_prg.reg6_17d;
set data_prg.reg6_17c;
if _n_=17  or _n_=21 then delete;
proc reg data=data_prg.reg6_17d;
model y=x1 x3 x4 x33 /noint p r collin;
run;
quit;