Frequencies for first 10,000 rows of dr_cf2 variable in vehicle dataset :

     Driver |
    Related |
   Factor 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,866       68.66       68.66
          1 |         35        0.35       69.01
          2 |          5        0.05       69.06
          3 |          1        0.01       69.07
          4 |          5        0.05       69.12
          5 |         15        0.15       69.27
          6 |        411        4.11       73.38
          7 |          4        0.04       73.42
         21 |         10        0.10       73.52
         22 |          5        0.05       73.57
         23 |         12        0.12       73.69
         24 |         59        0.59       74.28
         26 |         17        0.17       74.45
         27 |         26        0.26       74.71
         28 |        365        3.65       78.36
         29 |          3        0.03       78.39
         30 |          7        0.07       78.46
         31 |          6        0.06       78.52
         33 |         12        0.12       78.64
         34 |         11        0.11       78.75
         35 |         53        0.53       79.28
         36 |        120        1.20       80.48
         38 |        188        1.88       82.36
         39 |        216        2.16       84.52
         41 |          5        0.05       84.57
         42 |          3        0.03       84.60
         44 |        855        8.55       93.15
         45 |          2        0.02       93.17
         46 |          2        0.02       93.19
         47 |          5        0.05       93.24
         48 |        114        1.14       94.38
         49 |          3        0.03       94.41
         50 |         21        0.21       94.62
         51 |        160        1.60       96.22
         52 |         29        0.29       96.51
         53 |         59        0.59       97.10
         99 |        290        2.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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