Frequencies for first 10,000 rows of prov0885 variable in pos1993 dataset :

    general |
 supervisor |
          - |
grandfather |
         ed |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,951       99.51       99.51
          1 |         42        0.42       99.93
          2 |          3        0.03       99.96
          3 |          1        0.01       99.97
          4 |          1        0.01       99.98
          5 |          1        0.01       99.99
          6 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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