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

     Impact |
Point-Initi |
         al |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        403        4.03        4.03
          1 |        702        7.02       11.05
          2 |        210        2.10       13.15
          3 |        849        8.49       21.64
          4 |         43        0.43       22.07
          5 |        116        1.16       23.23
          6 |        351        3.51       26.74
          7 |        173        1.73       28.47
          8 |         77        0.77       29.24
          9 |        734        7.34       36.58
         10 |        110        1.10       37.68
         11 |        773        7.73       45.41
         12 |      4,741       47.41       92.82
         13 |         58        0.58       93.40
         14 |        557        5.57       98.97
         99 |        103        1.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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