Frequencies for first 10,000 rows of prov2715 variable in posclia2001 dataset :

   prov2715 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,679       76.79       76.79
          A |      2,303       23.03       99.82
          B |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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