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

      FIRST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,054       10.54       10.54
          2 |          1        0.01       10.55
          3 |         24        0.24       10.79
          5 |         77        0.77       11.56
          6 |          1        0.01       11.57
          7 |         22        0.22       11.79
          8 |      1,738       17.38       29.17
          9 |        327        3.27       32.44
         10 |         83        0.83       33.27
         11 |         18        0.18       33.45
         12 |      3,737       37.37       70.82
         13 |        122        1.22       72.04
         14 |        148        1.48       73.52
         15 |         17        0.17       73.69
         16 |          8        0.08       73.77
         17 |         30        0.30       74.07
         18 |         53        0.53       74.60
         19 |         15        0.15       74.75
         20 |          7        0.07       74.82
         21 |         23        0.23       75.05
         22 |         17        0.17       75.22
         23 |         29        0.29       75.51
         24 |        220        2.20       77.71
         25 |         55        0.55       78.26
         26 |          3        0.03       78.29
         27 |        103        1.03       79.32
         28 |          1        0.01       79.33
         29 |         26        0.26       79.59
         30 |        242        2.42       82.01
         31 |         88        0.88       82.89
         32 |         75        0.75       83.64
         33 |        344        3.44       87.08
         34 |        168        1.68       88.76
         35 |        118        1.18       89.94
         36 |         29        0.29       90.23
         37 |         95        0.95       91.18
         38 |         93        0.93       92.11
         39 |         34        0.34       92.45
         40 |          3        0.03       92.48
         41 |         16        0.16       92.64
         42 |        589        5.89       98.53
         43 |        128        1.28       99.81
         44 |          6        0.06       99.87
         45 |          4        0.04       99.91
         46 |          7        0.07       99.98
         99 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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