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

    Roadway |
    Surface |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        716        7.16        7.16
          2 |      8,367       83.67       90.83
          4 |        117        1.17       92.00
          5 |        104        1.04       93.04
          8 |          5        0.05       93.09
          9 |        691        6.91      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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