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

      First |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,231       12.31       12.31
          2 |          3        0.03       12.34
          3 |         12        0.12       12.46
          4 |          1        0.01       12.47
          5 |         71        0.71       13.18
          7 |         16        0.16       13.34
          8 |      1,799       17.99       31.33
          9 |        267        2.67       34.00
         10 |         82        0.82       34.82
         11 |         26        0.26       35.08
         12 |      3,600       36.00       71.08
         13 |        156        1.56       72.64
         14 |        206        2.06       74.70
         15 |         26        0.26       74.96
         16 |          4        0.04       75.00
         17 |         45        0.45       75.45
         18 |         43        0.43       75.88
         19 |         11        0.11       75.99
         20 |          2        0.02       76.01
         21 |         35        0.35       76.36
         22 |         30        0.30       76.66
         23 |         44        0.44       77.10
         24 |        244        2.44       79.54
         25 |         55        0.55       80.09
         26 |         17        0.17       80.26
         27 |         95        0.95       81.21
         28 |          2        0.02       81.23
         29 |         47        0.47       81.70
         30 |        228        2.28       83.98
         31 |         79        0.79       84.77
         32 |         80        0.80       85.57
         33 |        245        2.45       88.02
         34 |        129        1.29       89.31
         35 |        113        1.13       90.44
         36 |         40        0.40       90.84
         37 |         55        0.55       91.39
         38 |        125        1.25       92.64
         39 |         54        0.54       93.18
         40 |         11        0.11       93.29
         41 |         24        0.24       93.53
         42 |        495        4.95       98.48
         43 |        147        1.47       99.95
         44 |          1        0.01       99.96
         99 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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