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

  Number of |
     Travel |
      Lanes |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        172        1.72        1.72
          2 |      6,964       69.64       71.36
          3 |        754        7.54       78.90
          4 |      1,673       16.73       95.63
          5 |        144        1.44       97.07
          6 |        232        2.32       99.39
          7 |         15        0.15       99.54
          9 |         46        0.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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