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

Relation to |
    Roadway |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,306       63.06       63.06
          2 |        719        7.19       70.25
          3 |        285        2.85       73.10
          4 |      1,295       12.95       86.05
          5 |        473        4.73       90.78
          6 |        863        8.63       99.41
          7 |          4        0.04       99.45
          8 |         37        0.37       99.82
          9 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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