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

    ROADWAY |
    SURFACE |
       TYPE |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        835        8.35        8.35
          2 |      8,802       88.02       96.37
          3 |          2        0.02       96.39
          4 |         70        0.70       97.09
          5 |        110        1.10       98.19
          8 |          8        0.08       98.27
          9 |        173        1.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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