Frequencies for first 10,000 rows of impact2 variable in vehicle dataset :

  PRINCIPAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        803        8.03        8.03
          1 |        259        2.59       10.62
          2 |        143        1.43       12.05
          3 |        592        5.92       17.97
          4 |         75        0.75       18.72
          5 |         84        0.84       19.56
          6 |        496        4.96       24.52
          7 |        119        1.19       25.71
          8 |         93        0.93       26.64
          9 |        846        8.46       35.10
         10 |        173        1.73       36.83
         11 |        294        2.94       39.77
         12 |      5,263       52.63       92.40
         13 |        124        1.24       93.64
         14 |        311        3.11       96.75
         99 |        325        3.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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