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

  PRINCIPAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        676        6.76        6.76
          1 |        237        2.37        9.13
          2 |        182        1.82       10.95
          3 |        551        5.51       16.46
          4 |         86        0.86       17.32
          5 |        100        1.00       18.32
          6 |        509        5.09       23.41
          7 |        123        1.23       24.64
          8 |        113        1.13       25.77
          9 |        814        8.14       33.91
         10 |        182        1.82       35.73
         11 |        432        4.32       40.05
         12 |      5,219       52.19       92.24
         13 |         99        0.99       93.23
         14 |        335        3.35       96.58
         99 |        342        3.42      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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