Frequencies for first 10,000 rows of prov1895 variable in pos1993 dataset :

        120 |
   mycology |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,797       87.97       87.97
          N |        772        7.72       95.69
          Y |        431        4.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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