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

   areas of |
   impact - |
    initial |
    contact |
      point |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        770        7.70        7.70
          1 |        225        2.25        9.95
          2 |         89        0.89       10.84
          3 |        258        2.58       13.42
          4 |         63        0.63       14.05
          5 |         72        0.72       14.77
          6 |        655        6.55       21.32
          7 |         77        0.77       22.09
          8 |         68        0.68       22.77
          9 |        274        2.74       25.51
         10 |        108        1.08       26.59
         11 |        238        2.38       28.97
         12 |      5,339       53.39       82.36
         13 |         21        0.21       82.57
         14 |        280        2.80       85.37
         18 |          6        0.06       85.43
         19 |          9        0.09       85.52
         61 |        264        2.64       88.16
         62 |        155        1.55       89.71
         63 |         59        0.59       90.30
         81 |        239        2.39       92.69
         82 |        123        1.23       93.92
         83 |         56        0.56       94.48
         98 |        421        4.21       98.69
         99 |        131        1.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016