Frequencies for first 10,000 rows of drctr_qualn_cd variable in pos2000 dataset :

   director |
qualificati |
        ons |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,950       99.50       99.50
          1 |         29        0.29       99.79
          2 |          1        0.01       99.80
          3 |          1        0.01       99.81
          4 |          6        0.06       99.87
          5 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017