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

  occupants |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         34        0.34        0.34
          1 |      6,440       64.40       64.74
          2 |      2,034       20.34       85.08
          3 |        694        6.94       92.02
          4 |        383        3.83       95.85
          5 |        185        1.85       97.70
          6 |         73        0.73       98.43
          7 |         38        0.38       98.81
          8 |         19        0.19       99.00
          9 |          8        0.08       99.08
         10 |          7        0.07       99.15
         11 |          2        0.02       99.17
         12 |          2        0.02       99.19
         13 |          1        0.01       99.20
         14 |          1        0.01       99.21
         15 |          1        0.01       99.22
         17 |          1        0.01       99.23
         20 |          1        0.01       99.24
         45 |          1        0.01       99.25
         47 |          1        0.01       99.26
         97 |          1        0.01       99.27
         99 |         73        0.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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