Frequencies for first 10,000 rows of prov0890 variable in pos1993 dataset :

    general |
supervisor- |
    masters |
     degree |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,859       98.59       98.59
          1 |         86        0.86       99.45
          2 |         22        0.22       99.67
          3 |         20        0.20       99.87
          4 |          5        0.05       99.92
          5 |          4        0.04       99.96
          6 |          1        0.01       99.97
          9 |          2        0.02       99.99
         10 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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