Frequencies for impact1 variable in vehicle dataset :

    INITIAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         14        2.97        2.97
          1 |         26        5.51        8.47
          2 |         19        4.03       12.50
          3 |         39        8.26       20.76
          5 |          5        1.06       21.82
          6 |         23        4.87       26.69
          7 |          6        1.27       27.97
          9 |         43        9.11       37.08
         10 |         12        2.54       39.62
         11 |         26        5.51       45.13
         12 |        259       54.87      100.00
------------+-----------------------------------
      Total |        472      100.00

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