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

      First |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        983        9.83        9.83
          2 |          4        0.04        9.87
          3 |         31        0.31       10.18
          4 |          1        0.01       10.19
          5 |         93        0.93       11.12
          6 |          2        0.02       11.14
          7 |         18        0.18       11.32
          8 |      1,684       16.84       28.16
          9 |        235        2.35       30.51
         10 |        110        1.10       31.61
         11 |         17        0.17       31.78
         12 |      3,672       36.72       68.50
         13 |         65        0.65       69.15
         14 |        278        2.78       71.93
         15 |         12        0.12       72.05
         16 |         28        0.28       72.33
         18 |         12        0.12       72.45
         19 |        180        1.80       74.25
         20 |        487        4.87       79.12
         21 |         63        0.63       79.75
         22 |        344        3.44       83.19
         23 |        106        1.06       84.25
         24 |        298        2.98       87.23
         25 |         35        0.35       87.58
         26 |         71        0.71       88.29
         27 |        460        4.60       92.89
         28 |        320        3.20       96.09
         29 |         69        0.69       96.78
         30 |          1        0.01       96.79
         31 |        181        1.81       98.60
         32 |         49        0.49       99.09
         33 |         75        0.75       99.84
         99 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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