* SAS code for spider data from Table 5.1;
 options linesize=70;

 data spiders;
   input temp logratio @@;
   cards;
 10 -2.81508  10 -2.69473  10 -2.30309  10 -2.63073
 10 -2.74254  10 -2.58087  10 -2.82513  10 -2.10109
 15 -2.23378  15 -2.31367  15 -2.69093  15 -2.61604
 15 -2.85680  15 -2.93023  15 -2.56165  15 -2.97926
 20 -1.97753  20 -1.92117  20 -2.53879  20 -2.19948
 20 -2.13957
 20 -1.98788  20 -2.42344  20 -2.29301  20 -2.27348
 20 -2.43604
 25 -2.02078  25 -2.41178  25 -3.02343  25 -2.63536
 25 -2.54437  25 -1.95839  25 -2.63536  25 -2.75174
 25 -1.99863

 proc sort; by temp;       
 proc univariate plot;  * descriptive summaries;
   by temp;             * including side-by-side boxplots;
   var logratio;

 proc glm order=data;
   class temp;
   model logratio = temp;

 run;