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

  number of |
  occupants |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         45        0.45        0.45
          1 |      6,825       68.25       68.70
          2 |      1,936       19.36       88.06
          3 |        616        6.16       94.22
          4 |        314        3.14       97.36
          5 |        147        1.47       98.83
          6 |         54        0.54       99.37
          7 |         29        0.29       99.66
          8 |          9        0.09       99.75
          9 |          7        0.07       99.82
         10 |          2        0.02       99.84
         11 |          1        0.01       99.85
         12 |          1        0.01       99.86
         14 |          2        0.02       99.88
         15 |          2        0.02       99.90
         18 |          2        0.02       99.92
         19 |          2        0.02       99.94
         99 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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