Frequencies for first 10,000 rows of dr_hgt variable in vehicle dataset :

     DRIVER |
     HEIGHT |      Freq.     Percent        Cum.
------------+-----------------------------------
         37 |          2        0.02        0.02
         39 |          1        0.01        0.03
         40 |          1        0.01        0.04
         51 |          1        0.01        0.05
         52 |          1        0.01        0.06
         53 |          1        0.01        0.07
         56 |          6        0.06        0.13
         57 |          4        0.04        0.17
         58 |         13        0.13        0.30
         59 |         48        0.48        0.78
         60 |        165        1.65        2.43
         61 |        178        1.78        4.21
         62 |        350        3.50        7.71
         63 |        354        3.54       11.25
         64 |        517        5.17       16.42
         65 |        578        5.78       22.20
         66 |        763        7.63       29.83
         67 |        789        7.89       37.72
         68 |        886        8.86       46.58
         69 |        868        8.68       55.26
         70 |        937        9.37       64.63
         71 |        832        8.32       72.95
         72 |        904        9.04       81.99
         73 |        476        4.76       86.75
         74 |        368        3.68       90.43
         75 |        209        2.09       92.52
         76 |        113        1.13       93.65
         77 |         36        0.36       94.01
         78 |         24        0.24       94.25
         79 |          5        0.05       94.30
         80 |          5        0.05       94.35
         82 |          2        0.02       94.37
        999 |        522        5.22       99.59
          . |         41        0.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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