Frequencies for first 10,000 rows of persons variable in accident dataset :

  Number of |
MV occupant |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         13        0.13        0.13
          1 |      4,160       41.60       41.73
          2 |      2,657       26.57       68.30
          3 |      1,452       14.52       82.82
          4 |        778        7.78       90.60
          5 |        414        4.14       94.74
          6 |        230        2.30       97.04
          7 |        118        1.18       98.22
          8 |         63        0.63       98.85
          9 |         48        0.48       99.33
         10 |         20        0.20       99.53
         11 |         20        0.20       99.73
         12 |          8        0.08       99.81
         13 |          5        0.05       99.86
         14 |          6        0.06       99.92
         15 |          1        0.01       99.93
         17 |          2        0.02       99.95
         18 |          2        0.02       99.97
         23 |          1        0.01       99.98
         24 |          1        0.01       99.99
         33 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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