Frequencies for first 10,000 rows of dfeduc variable in natl1992 dataset :

  Education |
  of Father |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          2 |          1        0.01        0.02
          3 |          3        0.03        0.05
          4 |          6        0.06        0.11
          5 |          5        0.05        0.16
          6 |         15        0.15        0.31
          7 |         40        0.40        0.71
          8 |         90        0.90        1.61
          9 |        222        2.22        3.83
         10 |        321        3.21        7.04
         11 |        390        3.90       10.94
         12 |      2,585       25.85       36.79
         13 |        400        4.00       40.79
         14 |        696        6.96       47.75
         15 |        247        2.47       50.22
         16 |      1,086       10.86       61.08
         17 |        641        6.41       67.49
         99 |      3,251       32.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015