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

    INITIAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        658        6.58        6.58
          1 |        666        6.66       13.24
          2 |        221        2.21       15.45
          3 |        544        5.44       20.89
          4 |         75        0.75       21.64
          5 |        115        1.15       22.79
          6 |        390        3.90       26.69
          7 |        133        1.33       28.02
          8 |        117        1.17       29.19
          9 |        661        6.61       35.80
         10 |        239        2.39       38.19
         11 |        804        8.04       46.23
         12 |      4,748       47.48       93.71
         13 |         39        0.39       94.10
         14 |        443        4.43       98.53
         15 |          2        0.02       98.55
         16 |          2        0.02       98.57
         99 |        143        1.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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