* Hamster Example
  Predict the lifetime of a hamster from its percent 
  of life hibernated.  Create the scatterplot, the 
  residual plot, and normal plot of residuals;

options linesize=70 nodate;
data hamster;
   infile "c:/datasets/hamster.txt" firstobs=4;
   input hiber lifetime;
   label hiber="Percent of Life Hibernated"
         lifetime="Lifetime in Days";

proc print;

* Obtain simple linear regression model;
proc reg;
   
   model lifetime=hiber;

   * Plot regression line with confidence 
     and prediction intervals;
   plot lifetime*hiber r.*p. r.*nqq.;

run;
quit;