Frequencies for first 10,000 rows of dr_sf1 variable in vehicle dataset :

     Driver |
    Related |
 Factors (4 |
   choices) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,012       50.12       50.12
          4 |          3        0.03       50.15
          8 |         46        0.46       50.61
         12 |          4        0.04       50.65
         13 |          3        0.03       50.68
         16 |         14        0.14       50.82
         18 |          1        0.01       50.83
         20 |         34        0.34       51.17
         21 |          9        0.09       51.26
         22 |          1        0.01       51.27
         23 |          9        0.09       51.36
         24 |         59        0.59       51.95
         26 |         59        0.59       52.54
         27 |        106        1.06       53.60
         28 |        585        5.85       59.45
         29 |          5        0.05       59.50
         30 |          8        0.08       59.58
         31 |         19        0.19       59.77
         33 |         35        0.35       60.12
         34 |          8        0.08       60.20
         35 |         26        0.26       60.46
         36 |        744        7.44       67.90
         37 |         48        0.48       68.38
         38 |        599        5.99       74.37
         39 |        332        3.32       77.69
         41 |          3        0.03       77.72
         42 |          2        0.02       77.74
         45 |          8        0.08       77.82
         48 |        552        5.52       83.34
         50 |          8        0.08       83.42
         51 |        116        1.16       84.58
         52 |         17        0.17       84.75
         53 |         10        0.10       84.85
         54 |         14        0.14       84.99
         57 |         12        0.12       85.11
         58 |        166        1.66       86.77
         59 |          1        0.01       86.78
         73 |          7        0.07       86.85
         74 |         22        0.22       87.07
         77 |          3        0.03       87.10
         79 |          4        0.04       87.14
         80 |         33        0.33       87.47
         81 |          1        0.01       87.48
         82 |          6        0.06       87.54
         83 |         13        0.13       87.67
         84 |         20        0.20       87.87
         85 |         22        0.22       88.09
         86 |         10        0.10       88.19
         87 |         48        0.48       88.67
         89 |        132        1.32       89.99
         91 |         73        0.73       90.72
         92 |        482        4.82       95.54
         99 |        446        4.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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