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

      First |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        949        9.49        9.49
          2 |          4        0.04        9.53
          3 |         16        0.16        9.69
          5 |         70        0.70       10.39
          6 |          4        0.04       10.43
          7 |         10        0.10       10.53
          8 |      1,642       16.42       26.95
          9 |        274        2.74       29.69
         10 |         41        0.41       30.10
         11 |         54        0.54       30.64
         12 |      3,553       35.53       66.17
         14 |        119        1.19       67.36
         15 |         60        0.60       67.96
         16 |          5        0.05       68.01
         17 |         26        0.26       68.27
         18 |         54        0.54       68.81
         19 |         11        0.11       68.92
         20 |         10        0.10       69.02
         21 |         32        0.32       69.34
         23 |         30        0.30       69.64
         24 |        239        2.39       72.03
         25 |         91        0.91       72.94
         26 |          5        0.05       72.99
         30 |        221        2.21       75.20
         31 |         93        0.93       76.13
         32 |        104        1.04       77.17
         33 |        412        4.12       81.29
         34 |        378        3.78       85.07
         35 |        251        2.51       87.58
         38 |        139        1.39       88.97
         39 |         45        0.45       89.42
         40 |          3        0.03       89.45
         41 |         31        0.31       89.76
         42 |        620        6.20       95.96
         43 |         86        0.86       96.82
         44 |         11        0.11       96.93
         45 |          3        0.03       96.96
         46 |          9        0.09       97.05
         48 |          3        0.03       97.08
         49 |          2        0.02       97.10
         50 |          3        0.03       97.13
         51 |          4        0.04       97.17
         52 |         35        0.35       97.52
         53 |         71        0.71       98.23
         54 |          7        0.07       98.30
         57 |          6        0.06       98.36
         58 |         28        0.28       98.64
         59 |        104        1.04       99.68
         72 |          1        0.01       99.69
         99 |         31        0.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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