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

    Roadway |
    Surface |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        913        9.13        9.13
          2 |      8,826       88.26       97.39
          3 |          5        0.05       97.44
          4 |         84        0.84       98.28
          5 |        123        1.23       99.51
          8 |          9        0.09       99.60
          9 |         40        0.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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