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

    persons |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,348       23.48       23.48
          2 |      3,470       34.70       58.18
          3 |      1,844       18.44       76.62
          4 |      1,033       10.33       86.95
          5 |        557        5.57       92.52
          6 |        310        3.10       95.62
          7 |        148        1.48       97.10
          8 |        107        1.07       98.17
          9 |         63        0.63       98.80
         10 |         27        0.27       99.07
         11 |         29        0.29       99.36
         12 |         16        0.16       99.52
         13 |         11        0.11       99.63
         14 |          6        0.06       99.69
         15 |         10        0.10       99.79
         16 |          2        0.02       99.81
         17 |          3        0.03       99.84
         18 |          1        0.01       99.85
         19 |          2        0.02       99.87
         20 |          1        0.01       99.88
         22 |          2        0.02       99.90
         23 |          1        0.01       99.91
         27 |          1        0.01       99.92
         28 |          1        0.01       99.93
         30 |          1        0.01       99.94
         34 |          1        0.01       99.95
         38 |          1        0.01       99.96
         40 |          1        0.01       99.97
         45 |          1        0.01       99.98
         48 |          1        0.01       99.99
         50 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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