Frequencies for first 10,000 rows of dr_cf2 variable in vehicle dataset :

     Driver |
    Related |
   Factor 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,132       61.32       61.32
          1 |         49        0.49       61.81
          2 |          5        0.05       61.86
          4 |          3        0.03       61.89
          5 |         16        0.16       62.05
          6 |        675        6.75       68.80
          7 |          3        0.03       68.83
         21 |         10        0.10       68.93
         22 |          4        0.04       68.97
         23 |         18        0.18       69.15
         24 |         57        0.57       69.72
         25 |          1        0.01       69.73
         26 |         16        0.16       69.89
         27 |         20        0.20       70.09
         28 |      1,032       10.32       80.41
         29 |          5        0.05       80.46
         30 |          7        0.07       80.53
         31 |          4        0.04       80.57
         33 |          8        0.08       80.65
         34 |         12        0.12       80.77
         35 |         27        0.27       81.04
         36 |         48        0.48       81.52
         37 |         20        0.20       81.72
         38 |        175        1.75       83.47
         39 |        140        1.40       84.87
         40 |          2        0.02       84.89
         41 |          1        0.01       84.90
         42 |          1        0.01       84.91
         44 |        874        8.74       93.65
         46 |          1        0.01       93.66
         47 |          9        0.09       93.75
         48 |        141        1.41       95.16
         50 |         22        0.22       95.38
         51 |        121        1.21       96.59
         52 |         18        0.18       96.77
         53 |         43        0.43       97.20
         54 |          3        0.03       97.23
         99 |        277        2.77      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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