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

     Driver |
     Height |      Freq.     Percent        Cum.
------------+-----------------------------------
         37 |          2        0.02        0.02
         46 |          1        0.01        0.03
         48 |          2        0.02        0.05
         53 |          1        0.01        0.06
         54 |          1        0.01        0.07
         55 |          1        0.01        0.08
         56 |          2        0.02        0.10
         57 |         10        0.10        0.20
         58 |         13        0.13        0.33
         59 |         50        0.50        0.83
         60 |        135        1.35        2.18
         61 |        197        1.97        4.15
         62 |        342        3.42        7.57
         63 |        374        3.74       11.31
         64 |        519        5.19       16.50
         65 |        542        5.42       21.92
         66 |        779        7.79       29.71
         67 |        833        8.33       38.04
         68 |        885        8.85       46.89
         69 |        819        8.19       55.08
         70 |        896        8.96       64.04
         71 |        841        8.41       72.45
         72 |        895        8.95       81.40
         73 |        505        5.05       86.45
         74 |        369        3.69       90.14
         75 |        210        2.10       92.24
         76 |        126        1.26       93.50
         77 |         40        0.40       93.90
         78 |         19        0.19       94.09
         79 |          2        0.02       94.11
         80 |          4        0.04       94.15
         81 |          2        0.02       94.17
         82 |          1        0.01       94.18
         83 |          1        0.01       94.19
        999 |        581        5.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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