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

     Driver |
     Height |      Freq.     Percent        Cum.
------------+-----------------------------------
         38 |          1        0.01        0.01
         43 |          1        0.01        0.02
         48 |          1        0.01        0.03
         54 |          1        0.01        0.04
         55 |          2        0.02        0.06
         56 |          1        0.01        0.07
         57 |          8        0.08        0.15
         58 |         21        0.21        0.36
         59 |         40        0.40        0.76
         60 |        152        1.52        2.28
         61 |        187        1.87        4.15
         62 |        346        3.46        7.61
         63 |        369        3.69       11.30
         64 |        529        5.29       16.59
         65 |        561        5.61       22.20
         66 |        735        7.35       29.55
         67 |        831        8.31       37.86
         68 |        862        8.62       46.48
         69 |        846        8.46       54.94
         70 |        904        9.04       63.98
         71 |        858        8.58       72.56
         72 |        881        8.81       81.37
         73 |        496        4.96       86.33
         74 |        367        3.67       90.00
         75 |        196        1.96       91.96
         76 |        117        1.17       93.13
         77 |         36        0.36       93.49
         78 |         22        0.22       93.71
         79 |         15        0.15       93.86
         80 |          4        0.04       93.90
         82 |          2        0.02       93.92
         83 |          2        0.02       93.94
        998 |         61        0.61       94.55
        999 |        545        5.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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