Frequencies for first 10,000 rows of prov4960 variable in posclia2001 dataset :

   prov4960 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,743       97.43       97.43
          Y |        257        2.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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