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

     Impact |
Point-Initi |
         al |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        706        7.06        7.06
          1 |        832        8.32       15.38
          2 |        183        1.83       17.21
          3 |        585        5.85       23.06
          4 |        107        1.07       24.13
          5 |        109        1.09       25.22
          6 |        386        3.86       29.08
          7 |        130        1.30       30.38
          8 |        117        1.17       31.55
          9 |        644        6.44       37.99
         10 |        229        2.29       40.28
         11 |        985        9.85       50.13
         12 |      4,369       43.69       93.82
         13 |         31        0.31       94.13
         14 |        440        4.40       98.53
         15 |          4        0.04       98.57
         16 |          1        0.01       98.58
         99 |        142        1.42      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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