OPTIONS LS=72;
TITLE 'NUTRITION DEF P.149, CENTERING HGT, AGE, AGE2, NO INT FOR MOD 1';
DATA NUTRIDEF;
   INPUT WGT HGT AGE;
   LABEL WGT='WEIGHT'
         HGT='HEIGHT';
      CARDS;
64 57 8
71 59 10
53 49 6
67 62 11
55 51 8
58 50 7
77 55 10
57 48 9
56 42 10
51 42 6
76 61 12
68 57 9
;
PROC PRINT;

DATA NUTRIDF2;
   SET NUTRIDEF;
   WGT2=WGT*WGT;
   
PROC MEANS;

DATA NUTRIDF1;
   SET NUTRIDEF;
   HGT=HGT-52.75;
   AGE=AGE-8.833;
   AGE2=AGE*AGE;


PROC CORR;

PROC GLM DATA=NUTRIDF1;
      MODEL WGT=HGT AGE AGE2 / NOINT;
RUN;
PROC GLM DATA=NUTRIDF1;
      MODEL WGT=AGE AGE2;
RUN;

PROC GLM DATA=NUTRIDF1;
      MODEL WGT=HGT AGE2;
RUN;

PROC GLM DATA=NUTRIDF1;
      MODEL WGT=HGT AGE;
RUN;

PROC GLM DATA=NUTRIDF1;
      MODEL WGT=HGT AGE AGE2;

RUN;