Frequencies for first 10,000 rows of prov3480 variable in pos1994 dataset :

       srv: |
vocational- |
offsite-res |
     idents |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,565       75.65       75.65
          N |      2,291       22.91       98.56
          Y |        144        1.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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