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

    ROADWAY |
    SURFACE |
       TYPE |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        828        8.28        8.28
          2 |      8,908       89.08       97.36
          3 |          1        0.01       97.37
          4 |         73        0.73       98.10
          5 |        108        1.08       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