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 |      7,497       74.97       74.97
          1 |      2,335       23.35       98.32
          2 |        117        1.17       99.49
          3 |         29        0.29       99.78
          4 |         10        0.10       99.88
          5 |          4        0.04       99.92
          6 |          2        0.02       99.94
          7 |          2        0.02       99.96
         11 |          1        0.01       99.97
         13 |          1        0.01       99.98
         17 |          1        0.01       99.99
         21 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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