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

    Roadway |
  Alignment |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,175       71.75       71.75
          2 |      2,708       27.08       98.83
          9 |        117        1.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016