Stem and Leaf Plot of variable:         GRAD, N = 51
         Minimum:         55.2
         Lower hinge:         68.6
         Median:          74.7
         Upper hinge:         77.7
         Maximum:         89.3
 
               5   56
               6   222233444
               6 H 6889
               7 M 011233334444
               7 H 55555667777789
               8   01234
               8   56669