Frequencies for first 10,000 rows of prov2535 variable in pos1997 dataset :

       srv: |
 vocational |
   guidance |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,629       86.29       86.29
          0 |      1,341       13.41       99.70
          1 |          8        0.08       99.78
          2 |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016