Stem and Leaf Plot of variable:         GRAD, N = 51

         Minimum:       55.200
         Lower hinge:       68.550
         Median:        74.700
         Upper hinge:       77.750
         Maximum:       89.300
 

               5   56
               6   222233444
               6 H 6889
               7 M 011233334444
               7 H 55555667777789
               8   01234
               8   56669