Frequencies for first 10,000 rows of dfeduc variable in natl1986 dataset :

  Education |
  of Father |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          3        0.03        0.03
          1 |          1        0.01        0.04
          2 |          1        0.01        0.05
          3 |          8        0.08        0.13
          4 |          2        0.02        0.15
          5 |          9        0.09        0.24
          6 |         20        0.20        0.44
          7 |         67        0.67        1.11
          8 |        142        1.42        2.53
          9 |        281        2.81        5.34
         10 |        414        4.14        9.48
         11 |        522        5.22       14.70
         12 |      3,061       30.61       45.31
         13 |        371        3.71       49.02
         14 |        682        6.82       55.84
         15 |        250        2.50       58.34
         16 |        920        9.20       67.54
         17 |        567        5.67       73.21
         99 |      2,679       26.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016