Frequencies for dr_hgt variable in vehicle dataset :

     DRIVER |
     HEIGHT |      Freq.     Percent        Cum.
------------+-----------------------------------
         60 |          3        0.48        0.48
         61 |          2        0.32        0.80
         62 |          2        0.32        1.12
         64 |          4        0.64        1.76
         65 |         10        1.60        3.35
         66 |         10        1.60        4.95
         67 |         12        1.92        6.87
         68 |         12        1.92        8.79
         69 |          7        1.12        9.90
         70 |          4        0.64       10.54
         71 |          2        0.32       10.86
         72 |          4        0.64       11.50
         73 |          2        0.32       11.82
         74 |          1        0.16       11.98
        999 |        550       87.86       99.84
          . |          1        0.16      100.00
------------+-----------------------------------
      Total |        626      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016