*NKNW742.sas, quantitative factors using data in Table 16.1;
options nocenter;

data a1; 
 infile 'u:\.www\datasets512\CH17TA06.DAT';
 input product trainhrs;
proc print data=a1; run;

data a1; set a1; 
   hrs=2*trainhrs+4;
   hrs2=hrs*hrs;
proc print data=a1; run;

proc glm data=a1; 
   class trainhrs; 
   model product=hrs trainhrs / solution;
run;

proc glm data=a1; 
   class trainhrs; 
   model product=hrs hrs2 trainhrs;
run;