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

  number of |
parked/work |
        ing |
   vehicles |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,730       97.30       97.30
          1 |        197        1.97       99.27
          2 |         49        0.49       99.76
          3 |         16        0.16       99.92
          4 |          4        0.04       99.96
          5 |          2        0.02       99.98
          6 |          1        0.01       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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