Frequencies for first 10,000 rows of dfeduc variable in natl1981 dataset :

  Education |
  of Father |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          4        0.04        0.04
          1 |          1        0.01        0.05
          2 |          8        0.08        0.13
          3 |         12        0.12        0.25
          4 |          4        0.04        0.29
          5 |         18        0.18        0.47
          6 |         52        0.52        0.99
          7 |         88        0.88        1.87
          8 |        193        1.93        3.80
          9 |        331        3.31        7.11
         10 |        522        5.22       12.33
         11 |        521        5.21       17.54
         12 |      3,140       31.40       48.94
         13 |        384        3.84       52.78
         14 |        705        7.05       59.83
         15 |        235        2.35       62.18
         16 |        893        8.93       71.11
         17 |        507        5.07       76.18
         99 |      2,382       23.82      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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