Frequencies for first 10,000 rows of veh_sc2 variable in vehicle dataset :

    Vehicle |
    Related |
factors (2) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,921       99.21       99.21
         99 |         79        0.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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