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

      First |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,038       10.38       10.38
          2 |          2        0.02       10.40
          3 |         28        0.28       10.68
          4 |          1        0.01       10.69
          5 |         82        0.82       11.51
          6 |          3        0.03       11.54
          7 |         28        0.28       11.82
          8 |      1,779       17.79       29.61
          9 |        230        2.30       31.91
         10 |         80        0.80       32.71
         11 |         12        0.12       32.83
         12 |      3,636       36.36       69.19
         13 |        112        1.12       70.31
         14 |        232        2.32       72.63
         15 |         11        0.11       72.74
         16 |          1        0.01       72.75
         17 |         58        0.58       73.33
         18 |         31        0.31       73.64
         19 |         20        0.20       73.84
         20 |          1        0.01       73.85
         21 |         57        0.57       74.42
         22 |         18        0.18       74.60
         23 |         36        0.36       74.96
         24 |        302        3.02       77.98
         25 |         57        0.57       78.55
         26 |         11        0.11       78.66
         27 |         97        0.97       79.63
         28 |          2        0.02       79.65
         29 |         30        0.30       79.95
         30 |        251        2.51       82.46
         31 |         84        0.84       83.30
         32 |         82        0.82       84.12
         33 |        296        2.96       87.08
         34 |        141        1.41       88.49
         35 |        145        1.45       89.94
         36 |         29        0.29       90.23
         37 |         75        0.75       90.98
         38 |        128        1.28       92.26
         39 |         52        0.52       92.78
         40 |          9        0.09       92.87
         41 |         32        0.32       93.19
         42 |        487        4.87       98.06
         43 |        182        1.82       99.88
         44 |          1        0.01       99.89
         99 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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