* SAS source code for graphing the regression line,
  95% confidence and prediction intervals;

data bears;
   infile 'c:/datasets/bears85.txt' firstobs=3;
   input name $ 4-20 pos $ 24-25 ht_ft 27 ht_in 29-30 wt_lbs;
   height = 0.0254 * (ht_ft * 12 + ht_in);
   weight = 0.4536 * wt_lbs;
   keep height weight;

proc print;

symbol1 v=dot i=rl cv=black ci=red l=1;
symbol2 v=none i=rlclm90 ci=blue l=2; 
symbol3 v=none i=rlcli90 ci=green l=3;

proc gplot;
   plot weight*height=1 
        weight*height=2 
        weight*height=3 / overlay;
run;
quit;