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

     Driver |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,886       38.86       38.86
          1 |        199        1.99       40.85
          2 |         25        0.25       41.10
          3 |          5        0.05       41.15
          4 |         18        0.18       41.33
          5 |         14        0.14       41.47
          6 |        733        7.33       48.80
          7 |         22        0.22       49.02
          8 |          1        0.01       49.03
         20 |         24        0.24       49.27
         21 |         14        0.14       49.41
         22 |          7        0.07       49.48
         23 |         15        0.15       49.63
         24 |         45        0.45       50.08
         25 |          1        0.01       50.09
         26 |         38        0.38       50.47
         27 |         44        0.44       50.91
         28 |        517        5.17       56.08
         29 |          8        0.08       56.16
         30 |         17        0.17       56.33
         31 |         17        0.17       56.50
         33 |         27        0.27       56.77
         34 |          3        0.03       56.80
         35 |         78        0.78       57.58
         36 |        331        3.31       60.89
         38 |        555        5.55       66.44
         39 |        357        3.57       70.01
         40 |          7        0.07       70.08
         41 |          3        0.03       70.11
         42 |          8        0.08       70.19
         43 |          1        0.01       70.20
         44 |      2,139       21.39       91.59
         45 |          6        0.06       91.65
         46 |          1        0.01       91.66
         47 |          3        0.03       91.69
         48 |         73        0.73       92.42
         49 |          1        0.01       92.43
         50 |         43        0.43       92.86
         51 |        292        2.92       95.78
         52 |         15        0.15       95.93
         53 |         21        0.21       96.14
         99 |        386        3.86      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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