Frequencies for first 10,000 rows of dfeduc variable in natl1979 dataset :

  Education |
  of Father |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          5        0.05        0.05
          1 |          1        0.01        0.06
          2 |          3        0.03        0.09
          3 |         14        0.14        0.23
          4 |          7        0.07        0.30
          5 |         21        0.21        0.51
          6 |         59        0.59        1.10
          7 |        115        1.15        2.25
          8 |        207        2.07        4.32
          9 |        395        3.95        8.27
         10 |        586        5.86       14.13
         11 |        539        5.39       19.52
         12 |      3,197       31.97       51.49
         13 |        395        3.95       55.44
         14 |        627        6.27       61.71
         15 |        268        2.68       64.39
         16 |        750        7.50       71.89
         17 |        483        4.83       76.72
         99 |      2,328       23.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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