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

  Number of |
     Travel |
      Lanes |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        124        1.24        1.24
          2 |      7,205       72.05       73.29
          3 |        614        6.14       79.43
          4 |      1,670       16.70       96.13
          5 |        127        1.27       97.40
          6 |        147        1.47       98.87
          7 |          9        0.09       98.96
          9 |        104        1.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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