Frequencies for first 10,000 rows of prov1715 variable in pos2001 dataset :

   director |
qualificati |
        ons |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,948       99.48       99.48
          1 |         30        0.30       99.78
          2 |          1        0.01       99.79
          3 |          1        0.01       99.80
          4 |          6        0.06       99.86
          5 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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