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

     Driver |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,817       38.17       38.17
          1 |        201        2.01       40.18
          2 |         24        0.24       40.42
          3 |          1        0.01       40.43
          4 |          6        0.06       40.49
          5 |         24        0.24       40.73
          6 |      1,051       10.51       51.24
          7 |          8        0.08       51.32
         20 |         44        0.44       51.76
         21 |         23        0.23       51.99
         22 |          8        0.08       52.07
         23 |         22        0.22       52.29
         24 |         81        0.81       53.10
         26 |         24        0.24       53.34
         27 |         42        0.42       53.76
         28 |        562        5.62       59.38
         29 |          2        0.02       59.40
         30 |         14        0.14       59.54
         31 |         19        0.19       59.73
         33 |         17        0.17       59.90
         34 |          7        0.07       59.97
         35 |         63        0.63       60.60
         36 |        306        3.06       63.66
         38 |        552        5.52       69.18
         39 |        236        2.36       71.54
         40 |          1        0.01       71.55
         41 |          3        0.03       71.58
         42 |          3        0.03       71.61
         43 |          1        0.01       71.62
         44 |      2,112       21.12       92.74
         45 |          8        0.08       92.82
         47 |          5        0.05       92.87
         48 |        102        1.02       93.89
         49 |          2        0.02       93.91
         50 |         48        0.48       94.39
         51 |        235        2.35       96.74
         52 |          9        0.09       96.83
         53 |         27        0.27       97.10
         99 |        290        2.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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