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

    Roadway |
    Surface |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,028       10.28       10.28
          2 |      8,670       86.70       96.98
          3 |          2        0.02       97.00
          4 |        138        1.38       98.38
          5 |        121        1.21       99.59
          8 |          5        0.05       99.64
          9 |         36        0.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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