Frequencies for first 10,000 rows of dr_sf2 variable in vehicle dataset :

     Driver |
    Related |
 Factors (4 |
   choices) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,558       85.58       85.58
          8 |          3        0.03       85.61
         13 |          1        0.01       85.62
         16 |          1        0.01       85.63
         20 |          1        0.01       85.64
         21 |          2        0.02       85.66
         23 |          3        0.03       85.69
         24 |         16        0.16       85.85
         26 |          9        0.09       85.94
         27 |         13        0.13       86.07
         28 |         57        0.57       86.64
         29 |          3        0.03       86.67
         30 |          2        0.02       86.69
         31 |          4        0.04       86.73
         33 |          6        0.06       86.79
         34 |          1        0.01       86.80
         35 |         10        0.10       86.90
         36 |         67        0.67       87.57
         37 |         25        0.25       87.82
         38 |         53        0.53       88.35
         39 |         75        0.75       89.10
         40 |          1        0.01       89.11
         45 |          1        0.01       89.12
         47 |          1        0.01       89.13
         48 |        117        1.17       90.30
         50 |          1        0.01       90.31
         51 |         27        0.27       90.58
         52 |         24        0.24       90.82
         53 |         21        0.21       91.03
         54 |          4        0.04       91.07
         57 |          4        0.04       91.11
         58 |        126        1.26       92.37
         73 |         18        0.18       92.55
         74 |         17        0.17       92.72
         79 |          1        0.01       92.73
         80 |         10        0.10       92.83
         81 |          5        0.05       92.88
         82 |          2        0.02       92.90
         83 |          2        0.02       92.92
         84 |          2        0.02       92.94
         85 |          3        0.03       92.97
         86 |          1        0.01       92.98
         87 |         17        0.17       93.15
         89 |          8        0.08       93.23
         91 |         48        0.48       93.71
         92 |        183        1.83       95.54
         99 |        446        4.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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