Frequencies for vin_12 variable in vehnit dataset :

     vin_12 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1       33.33       33.33
          1 |          1       33.33       66.67
          2 |          1       33.33      100.00
------------+-----------------------------------
      Total |          3      100.00

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