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

    ROADWAY |
  ALIGNMENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,741       77.41       77.41
          2 |      2,183       21.83       99.24
          9 |         76        0.76      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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