Frequencies for first 10,000 rows of dfeduc variable in natl1990 dataset :

  Education |
  of Father |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          2 |          2        0.02        0.03
          3 |          2        0.02        0.05
          4 |          3        0.03        0.08
          5 |          5        0.05        0.13
          6 |         12        0.12        0.25
          7 |         52        0.52        0.77
          8 |        108        1.08        1.85
          9 |        227        2.27        4.12
         10 |        388        3.88        8.00
         11 |        418        4.18       12.18
         12 |      2,681       26.81       38.99
         13 |        429        4.29       43.28
         14 |        711        7.11       50.39
         15 |        260        2.60       52.99
         16 |        985        9.85       62.84
         17 |        622        6.22       69.06
         99 |      3,094       30.94      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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