options nocenter ls=72;

data table8;
 infile 'I:\.www\datasets502\example8-1.dat';
 input child wgt hgt age;
 agesq = age*age;

proc print;

proc reg simple corr;
 model wgt = hgt;
 model wgt = age;
 model wgt = hgt age;
 model wgt = hgt agesq;
 model wgt = hgt age agesq;
run;