Frequencies for first 10,000 rows of pernotmvit variable in accident dataset :

  number of |
persons not |
   in motor |
   vehicles |
in-transpor |
          t |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,720       77.20       77.20
          1 |      2,102       21.02       98.22
          2 |        133        1.33       99.55
          3 |         27        0.27       99.82
          4 |         13        0.13       99.95
          5 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016