* zinc plating experiment;  * chapter 9;
OPTIONS LINESIZE=75;
DATA ZINC;
 INPUT VENDOR X Y;
 LINES;
 1  110   40   
 1   75   38   
 1   93   30   
 1   97   47   
 2   60   25   
 2   75   32  
 2   38   13  
 2  140   35  
 3   62   27  
 3   90   24  
 3   45   20  
 3   59   13  
;