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

     Driver |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,506       35.06       35.06
          1 |        161        1.61       36.67
          2 |         13        0.13       36.80
          3 |          1        0.01       36.81
          4 |          2        0.02       36.83
          5 |         11        0.11       36.94
          6 |      1,133       11.33       48.27
          7 |          7        0.07       48.34
         20 |         71        0.71       49.05
         21 |         23        0.23       49.28
         22 |          9        0.09       49.37
         23 |         30        0.30       49.67
         24 |         75        0.75       50.42
         26 |         25        0.25       50.67
         27 |         28        0.28       50.95
         28 |        945        9.45       60.40
         29 |          4        0.04       60.44
         30 |         10        0.10       60.54
         31 |         21        0.21       60.75
         32 |          1        0.01       60.76
         33 |         14        0.14       60.90
         34 |          9        0.09       60.99
         35 |         46        0.46       61.45
         36 |         64        0.64       62.09
         37 |         18        0.18       62.27
         38 |        551        5.51       67.78
         39 |        321        3.21       70.99
         40 |          3        0.03       71.02
         41 |          1        0.01       71.03
         42 |          6        0.06       71.09
         44 |      2,123       21.23       92.32
         45 |          2        0.02       92.34
         46 |          3        0.03       92.37
         47 |          7        0.07       92.44
         48 |        147        1.47       93.91
         49 |          1        0.01       93.92
         50 |         56        0.56       94.48
         51 |        198        1.98       96.46
         52 |         15        0.15       96.61
         53 |         25        0.25       96.86
         54 |         37        0.37       97.23
         99 |        277        2.77      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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