Frequencies for impact1 variable in vehicle dataset :

    INITIAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         17        2.72        2.72
          1 |         47        7.51       10.22
          2 |          6        0.96       11.18
          3 |         53        8.47       19.65
          5 |          4        0.64       20.29
          6 |         26        4.15       24.44
          7 |          8        1.28       25.72
          8 |          1        0.16       25.88
          9 |         55        8.79       34.66
         10 |         39        6.23       40.89
         11 |         31        4.95       45.85
         12 |        338       53.99       99.84
         13 |          1        0.16      100.00
------------+-----------------------------------
      Total |        626      100.00

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