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

  PRINCIPAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        782        7.82        7.82
          1 |        312        3.12       10.94
          2 |        124        1.24       12.18
          3 |        617        6.17       18.35
          4 |         78        0.78       19.13
          5 |        105        1.05       20.18
          6 |        459        4.59       24.77
          7 |        136        1.36       26.13
          8 |        109        1.09       27.22
          9 |        790        7.90       35.12
         10 |        173        1.73       36.85
         11 |        299        2.99       39.84
         12 |      5,277       52.77       92.61
         13 |         69        0.69       93.30
         14 |        311        3.11       96.41
         99 |        359        3.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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