Frequencies for first 10,000 rows of prov0885 variable in pos1991 dataset :

    general |
 supervisor |
          - |
grandfather |
         ed |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,925       99.25       99.25
          1 |         67        0.67       99.92
          2 |          4        0.04       99.96
          3 |          1        0.01       99.97
          4 |          1        0.01       99.98
          5 |          1        0.01       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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