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

    Area of |
    Impact- |
    Initial |
    Damaged |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        855        8.55        8.55
          1 |        259        2.59       11.14
          2 |        111        1.11       12.25
          3 |        270        2.70       14.95
          4 |         61        0.61       15.56
          5 |         65        0.65       16.21
          6 |        589        5.89       22.10
          7 |         89        0.89       22.99
          8 |         67        0.67       23.66
          9 |        337        3.37       27.03
         10 |        134        1.34       28.37
         11 |        278        2.78       31.15
         12 |      5,025       50.25       81.40
         13 |         20        0.20       81.60
         14 |        466        4.66       86.26
         18 |         11        0.11       86.37
         61 |        284        2.84       89.21
         62 |        142        1.42       90.63
         63 |         55        0.55       91.18
         81 |        249        2.49       93.67
         82 |        107        1.07       94.74
         83 |         55        0.55       95.29
         98 |        254        2.54       97.83
         99 |        217        2.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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