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

    Roadway |
    Surface |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        712        7.12        7.12
          2 |      7,300       73.00       80.12
          3 |          2        0.02       80.14
          4 |         71        0.71       80.85
          5 |         82        0.82       81.67
          8 |          8        0.08       81.75
          9 |      1,825       18.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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