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

  Number of |
Parked/Work |
        ing |
   Vehicles |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,760       97.60       97.60
          1 |        185        1.85       99.45
          2 |         41        0.41       99.86
          3 |          8        0.08       99.94
          4 |          2        0.02       99.96
          5 |          3        0.03       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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