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

      First |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,066       10.66       10.66
          2 |          5        0.05       10.71
          3 |         23        0.23       10.94
          4 |          3        0.03       10.97
          5 |         99        0.99       11.96
          6 |          3        0.03       11.99
          7 |         30        0.30       12.29
          8 |      1,884       18.84       31.13
          9 |        278        2.78       33.91
         10 |         58        0.58       34.49
         11 |         13        0.13       34.62
         12 |      3,575       35.75       70.37
         13 |         42        0.42       70.79
         14 |        237        2.37       73.16
         15 |          9        0.09       73.25
         16 |          2        0.02       73.27
         17 |         51        0.51       73.78
         18 |         27        0.27       74.05
         19 |          9        0.09       74.14
         20 |          2        0.02       74.16
         21 |         43        0.43       74.59
         22 |         27        0.27       74.86
         23 |         52        0.52       75.38
         24 |        284        2.84       78.22
         25 |         67        0.67       78.89
         26 |         15        0.15       79.04
         27 |         65        0.65       79.69
         29 |         29        0.29       79.98
         30 |        272        2.72       82.70
         31 |        112        1.12       83.82
         32 |         93        0.93       84.75
         33 |        425        4.25       89.00
         34 |        102        1.02       90.02
         35 |        171        1.71       91.73
         36 |         37        0.37       92.10
         37 |         68        0.68       92.78
         38 |         87        0.87       93.65
         39 |         33        0.33       93.98
         40 |          9        0.09       94.07
         41 |         19        0.19       94.26
         42 |        443        4.43       98.69
         43 |        119        1.19       99.88
         44 |          9        0.09       99.97
         99 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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