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

    ROADWAY |
    SURFACE |
       TYPE |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        861        8.61        8.61
          2 |      8,768       87.68       96.29
          3 |          4        0.04       96.33
          4 |         36        0.36       96.69
          5 |        126        1.26       97.95
          8 |          3        0.03       97.98
          9 |        202        2.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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