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

    Roadway |
    Surface |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        916        9.16        9.16
          2 |      8,837       88.37       97.53
          3 |          4        0.04       97.57
          4 |         88        0.88       98.45
          5 |        105        1.05       99.50
          8 |          6        0.06       99.56
          9 |         44        0.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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