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

     driver |
     height |      Freq.     Percent        Cum.
------------+-----------------------------------
         48 |          2        0.02        0.02
         51 |          1        0.01        0.03
         53 |          1        0.01        0.04
         54 |          1        0.01        0.05
         55 |          2        0.02        0.07
         56 |          2        0.02        0.09
         57 |          7        0.07        0.16
         58 |         13        0.13        0.29
         59 |         47        0.47        0.76
         60 |        145        1.45        2.21
         61 |        187        1.87        4.08
         62 |        355        3.55        7.63
         63 |        374        3.74       11.37
         64 |        497        4.97       16.34
         65 |        566        5.66       22.00
         66 |        744        7.44       29.44
         67 |        867        8.67       38.11
         68 |        877        8.77       46.88
         69 |        839        8.39       55.27
         70 |        926        9.26       64.53
         71 |        837        8.37       72.90
         72 |        886        8.86       81.76
         73 |        503        5.03       86.79
         74 |        381        3.81       90.60
         75 |        202        2.02       92.62
         76 |        103        1.03       93.65
         77 |         44        0.44       94.09
         78 |         22        0.22       94.31
         79 |          3        0.03       94.34
         80 |          7        0.07       94.41
         83 |          1        0.01       94.42
        998 |         64        0.64       95.06
        999 |        494        4.94      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016