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

    ROADWAY |
    SURFACE |
       TYPE |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        826        8.26        8.26
          2 |      8,897       88.97       97.23
          3 |          3        0.03       97.26
          4 |         59        0.59       97.85
          5 |        133        1.33       99.18
          8 |          3        0.03       99.21
          9 |         79        0.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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