Frequencies for first 10,000 rows of prov3475 variable in pos2001 dataset :

       srv: |
vocational- |
 onsite-non |
      resid |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,345       73.45       73.45
          N |      2,643       26.43       99.88
          Y |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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