Frequencies for impact1 variable in vehicle dataset :

    INITIAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         30        4.19        4.19
          1 |         43        6.01       10.20
          2 |          5        0.70       10.89
          3 |         58        8.10       18.99
          5 |          3        0.42       19.41
          6 |         26        3.63       23.04
          7 |          6        0.84       23.88
          9 |         58        8.10       31.98
         10 |         21        2.93       34.92
         11 |         34        4.75       39.66
         12 |        431       60.20       99.86
         13 |          1        0.14      100.00
------------+-----------------------------------
      Total |        716      100.00

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