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

Relation to |
    Roadway |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,143       61.43       61.43
          2 |        931        9.31       70.74
          3 |        299        2.99       73.73
          4 |      1,736       17.36       91.09
          5 |        420        4.20       95.29
          6 |        431        4.31       99.60
          7 |         10        0.10       99.70
          8 |         10        0.10       99.80
          9 |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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