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

    Roadway |
    Surface |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        652        6.52        6.52
          2 |      8,220       82.20       88.72
          4 |        186        1.86       90.58
          5 |        154        1.54       92.12
          8 |         15        0.15       92.27
          9 |        773        7.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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