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 |      4,278       42.78       42.91
          2 |      2,702       27.02       69.93
          3 |      1,334       13.34       83.27
          4 |        732        7.32       90.59
          5 |        419        4.19       94.78
          6 |        207        2.07       96.85
          7 |        114        1.14       97.99
          8 |         73        0.73       98.72
          9 |         51        0.51       99.23
         10 |         22        0.22       99.45
         11 |         15        0.15       99.60
         12 |          9        0.09       99.69
         13 |          7        0.07       99.76
         14 |          3        0.03       99.79
         15 |          4        0.04       99.83
         16 |          4        0.04       99.87
         17 |          3        0.03       99.90
         18 |          2        0.02       99.92
         19 |          1        0.01       99.93
         20 |          2        0.02       99.95
         21 |          1        0.01       99.96
         22 |          3        0.03       99.99
         42 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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