Frequencies for first 10,000 rows of prov1895 variable in pos1995 dataset :

        120 |
   mycology |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,884       88.84       88.84
          N |        727        7.27       96.11
          Y |        389        3.89      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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