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

  occupants |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         52        0.52        0.52
          1 |      6,216       62.16       62.68
          2 |      2,148       21.48       84.16
          3 |        740        7.40       91.56
          4 |        396        3.96       95.52
          5 |        202        2.02       97.54
          6 |         59        0.59       98.13
          7 |         34        0.34       98.47
          8 |         16        0.16       98.63
          9 |          6        0.06       98.69
         10 |          4        0.04       98.73
         11 |          2        0.02       98.75
         12 |          4        0.04       98.79
         13 |          1        0.01       98.80
         14 |          1        0.01       98.81
         16 |          1        0.01       98.82
         17 |          2        0.02       98.84
         19 |          1        0.01       98.85
         20 |          1        0.01       98.86
         21 |          2        0.02       98.88
         28 |          1        0.01       98.89
         41 |          1        0.01       98.90
         97 |          3        0.03       98.93
         99 |        107        1.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016