Frequencies for first 10,000 rows of prov5250 variable in pos1997 dataset :

   srv: oth |
activities- |
     onsite |
     nonres |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,405       74.05       74.05
          N |      2,558       25.58       99.63
          Y |         37        0.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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