Frequencies for first 10,000 rows of prov1715 variable in pos2004 dataset :

   director |
qualificati |
        ons |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,941       99.41       99.41
          1 |         29        0.29       99.70
          2 |          2        0.02       99.72
          3 |          2        0.02       99.74
          4 |          6        0.06       99.80
          5 |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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