Frequencies for first 10,000 rows of dr_cf1 variable in vehicle dataset :

     Driver |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,358       33.58       33.58
          1 |        114        1.14       34.72
          2 |         18        0.18       34.90
          3 |          2        0.02       34.92
          4 |          1        0.01       34.93
          5 |         30        0.30       35.23
          6 |        726        7.26       42.49
          7 |          6        0.06       42.55
          8 |          1        0.01       42.56
         20 |         68        0.68       43.24
         21 |         27        0.27       43.51
         22 |          7        0.07       43.58
         23 |         30        0.30       43.88
         24 |         70        0.70       44.58
         26 |         23        0.23       44.81
         27 |         37        0.37       45.18
         28 |      1,471       14.71       59.89
         29 |         10        0.10       59.99
         30 |          5        0.05       60.04
         31 |         15        0.15       60.19
         32 |          1        0.01       60.20
         33 |         17        0.17       60.37
         34 |          9        0.09       60.46
         35 |         37        0.37       60.83
         36 |         81        0.81       61.64
         37 |         14        0.14       61.78
         38 |        564        5.64       67.42
         39 |        337        3.37       70.79
         40 |          1        0.01       70.80
         41 |          4        0.04       70.84
         42 |          3        0.03       70.87
         44 |      2,076       20.76       91.63
         45 |          2        0.02       91.65
         46 |          2        0.02       91.67
         47 |          6        0.06       91.73
         48 |        254        2.54       94.27
         50 |         11        0.11       94.38
         51 |        251        2.51       96.89
         52 |         11        0.11       97.00
         53 |         20        0.20       97.20
         54 |         44        0.44       97.64
         55 |          5        0.05       97.69
         99 |        231        2.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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