Frequencies for first 10,000 rows of prov5280 variable in pos2001 dataset :

   srv: oth |
        soc |
 srv-onsite |
  to nonres |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,345       73.45       73.45
          N |      2,629       26.29       99.74
          Y |         26        0.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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