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

     Driver |
    Related |
 Factors (4 |
   choices) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,515       85.15       85.15
          8 |          6        0.06       85.21
         16 |          1        0.01       85.22
         21 |          5        0.05       85.27
         23 |          3        0.03       85.30
         24 |         28        0.28       85.58
         26 |          5        0.05       85.63
         27 |          8        0.08       85.71
         28 |         74        0.74       86.45
         29 |          2        0.02       86.47
         30 |          2        0.02       86.49
         31 |          2        0.02       86.51
         33 |          5        0.05       86.56
         34 |          6        0.06       86.62
         35 |         15        0.15       86.77
         36 |         50        0.50       87.27
         37 |         20        0.20       87.47
         38 |         64        0.64       88.11
         39 |         72        0.72       88.83
         41 |          3        0.03       88.86
         42 |          1        0.01       88.87
         48 |        114        1.14       90.01
         50 |          2        0.02       90.03
         51 |         21        0.21       90.24
         52 |         14        0.14       90.38
         53 |          9        0.09       90.47
         54 |          2        0.02       90.49
         57 |         10        0.10       90.59
         58 |        100        1.00       91.59
         73 |         18        0.18       91.77
         74 |         24        0.24       92.01
         77 |          2        0.02       92.03
         79 |          2        0.02       92.05
         80 |         10        0.10       92.15
         81 |          1        0.01       92.16
         82 |          4        0.04       92.20
         83 |          2        0.02       92.22
         84 |          1        0.01       92.23
         85 |          5        0.05       92.28
         86 |          3        0.03       92.31
         87 |         25        0.25       92.56
         88 |          1        0.01       92.57
         89 |          7        0.07       92.64
         91 |         58        0.58       93.22
         92 |        255        2.55       95.77
         99 |        423        4.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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