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

  occupants |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         47        0.47        0.47
          1 |      5,881       58.81       59.28
          2 |      2,310       23.10       82.38
          3 |        774        7.74       90.12
          4 |        448        4.48       94.60
          5 |        190        1.90       96.50
          6 |         84        0.84       97.34
          7 |         37        0.37       97.71
          8 |         24        0.24       97.95
          9 |          8        0.08       98.03
         10 |          4        0.04       98.07
         11 |          6        0.06       98.13
         12 |          1        0.01       98.14
         14 |          3        0.03       98.17
         15 |          1        0.01       98.18
         16 |          1        0.01       98.19
         20 |          1        0.01       98.20
         21 |          1        0.01       98.21
         23 |          1        0.01       98.22
         27 |          1        0.01       98.23
         97 |         18        0.18       98.41
         99 |        159        1.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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