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

    ROADWAY |
    SURFACE |
       TYPE |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        885        8.85        8.85
          2 |      8,821       88.21       97.06
          3 |          4        0.04       97.10
          4 |         57        0.57       97.67
          5 |        130        1.30       98.97
          8 |          8        0.08       99.05
          9 |         95        0.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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