Frequencies for first 10,000 rows of prov1715 variable in pos1999 dataset :

   director |
qualificati |
        ons |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,939       99.39       99.39
          1 |         37        0.37       99.76
          2 |          1        0.01       99.77
          3 |          2        0.02       99.79
          4 |          6        0.06       99.85
          5 |         15        0.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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