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

  number of |
mv occupant |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         10        0.10        0.10
          1 |      4,170       41.70       41.80
          2 |      2,683       26.83       68.63
          3 |      1,465       14.65       83.28
          4 |        721        7.21       90.49
          5 |        391        3.91       94.40
          6 |        256        2.56       96.96
          7 |        127        1.27       98.23
          8 |         74        0.74       98.97
          9 |         25        0.25       99.22
         10 |         27        0.27       99.49
         11 |         16        0.16       99.65
         12 |         13        0.13       99.78
         13 |          8        0.08       99.86
         14 |          4        0.04       99.90
         15 |          3        0.03       99.93
         16 |          1        0.01       99.94
         18 |          3        0.03       99.97
         27 |          1        0.01       99.98
         37 |          1        0.01       99.99
         48 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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