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

    Roadway |
    Surface |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        972        9.72        9.72
          2 |      8,764       87.64       97.36
          3 |          7        0.07       97.43
          4 |        102        1.02       98.45
          5 |        124        1.24       99.69
          8 |          2        0.02       99.71
          9 |         29        0.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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