习题7.4.sas

< 应用多元分析>>数据与程序（王学民第二版）

proc princomp data=sasuser.exec74 out=prin;
   var x1-x7;

proc sort;
   by prin1;
proc print;
   id state;
   var prin1 prin2 x1-x7;
proc sort;
   by prin2;
proc print;
   id state;
   var prin1 prin2 x1-x7;

proc plot;
   plot prin2*prin1=state;
run;