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

    Roadway |
    Surface |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        740        7.40        7.40
          2 |      8,341       83.41       90.81
          4 |         91        0.91       91.72
          5 |         77        0.77       92.49
          8 |          5        0.05       92.54
          9 |        746        7.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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