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

    ROADWAY |
    SURFACE |
       TYPE |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        745        7.45        7.45
          2 |      8,966       89.66       97.11
          3 |          3        0.03       97.14
          4 |         98        0.98       98.12
          5 |        120        1.20       99.32
          8 |          3        0.03       99.35
          9 |         65        0.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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