Create the data set.


data totals; 
 input Site $ Quarter Sales Salespersons; 
format Sales dollar12.2;
datalines; 
Lima  1 4043.97    4 
NY     1  8225.26   12 
Rome  1 3543.97    6 
Lima  2  3723.44    5 
NY      2  8595.07   18 
Rome  2 5558.29   10 
Lima  3 4437.96    8 
NY     3  9847.91   24 
Rome  3 6789.85   14 
Lima  4  6065.57   10 
NY     4  11388.51  26 
Rome  4  8509.08   16 
;