Frequencies for first 10,000 rows of prov3475 variable in pos2005 dataset :

       srv: |
vocational- |
 onsite-non |
      resid |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,474       74.74       74.74
          N |      2,518       25.18       99.92
          Y |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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