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

  Number of |
     Travel |
      Lanes |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        119        1.19        1.19
          2 |      7,410       74.10       75.29
          3 |        746        7.46       82.75
          4 |      1,405       14.05       96.80
          5 |        115        1.15       97.95
          6 |        152        1.52       99.47
          7 |          3        0.03       99.50
          9 |         50        0.50      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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