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

    Roadway |
    Surface |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        989        9.89        9.89
          2 |      8,740       87.40       97.29
          3 |          5        0.05       97.34
          4 |        111        1.11       98.45
          5 |        131        1.31       99.76
          8 |          3        0.03       99.79
          9 |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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