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

RELATION TO |
 TRAFFICWAY |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,782       57.82       57.82
          2 |        411        4.11       61.93
          3 |        429        4.29       66.22
          4 |      2,561       25.61       91.83
          5 |        255        2.55       94.38
          6 |        430        4.30       98.68
          7 |         24        0.24       98.92
          8 |         38        0.38       99.30
         10 |         10        0.10       99.40
         11 |          7        0.07       99.47
         99 |         53        0.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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