Frequencies for first 10,000 rows of prov1715 variable in pos1991 dataset :

   director |
qualificati |
        ons |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,845       98.45       98.45
          1 |         94        0.94       99.39
          3 |          4        0.04       99.43
          4 |          8        0.08       99.51
          5 |         49        0.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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