Frequencies for first 10,000 rows of impact1 variable in vehicle dataset :

    Area of |
    Impact- |
    Initial |
    Damaged |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        798        7.98        7.98
          1 |        330        3.30       11.28
          2 |        123        1.23       12.51
          3 |        369        3.69       16.20
          4 |         80        0.80       17.00
          5 |         70        0.70       17.70
          6 |        603        6.03       23.73
          7 |         66        0.66       24.39
          8 |         80        0.80       25.19
          9 |        452        4.52       29.71
         10 |        148        1.48       31.19
         11 |        382        3.82       35.01
         12 |      5,193       51.93       86.94
         13 |         21        0.21       87.15
         14 |        406        4.06       91.21
         18 |         12        0.12       91.33
         61 |        156        1.56       92.89
         62 |        102        1.02       93.91
         63 |         35        0.35       94.26
         81 |        134        1.34       95.60
         82 |         88        0.88       96.48
         83 |         47        0.47       96.95
         98 |         94        0.94       97.89
         99 |        211        2.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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