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

   areas of |
   impact - |
    initial |
    contact |
      point |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        685        6.85        6.85
          1 |        211        2.11        8.96
          2 |         88        0.88        9.84
          3 |        219        2.19       12.03
          4 |         75        0.75       12.78
          5 |         67        0.67       13.45
          6 |        656        6.56       20.01
          7 |         77        0.77       20.78
          8 |         64        0.64       21.42
          9 |        297        2.97       24.39
         10 |        106        1.06       25.45
         11 |        265        2.65       28.10
         12 |      5,302       53.02       81.12
         13 |         24        0.24       81.36
         14 |        226        2.26       83.62
         18 |         10        0.10       83.72
         19 |          6        0.06       83.78
         61 |        286        2.86       86.64
         62 |        132        1.32       87.96
         63 |         51        0.51       88.47
         81 |        239        2.39       90.86
         82 |        151        1.51       92.37
         83 |         73        0.73       93.10
         98 |        535        5.35       98.45
         99 |        155        1.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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