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

  Number of |
     Travel |
      Lanes |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         96        0.96        0.96
          2 |      7,322       73.22       74.18
          3 |        697        6.97       81.15
          4 |      1,544       15.44       96.59
          5 |        124        1.24       97.83
          6 |        171        1.71       99.54
          7 |          8        0.08       99.62
          9 |         38        0.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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