Frequencies for first 10,000 rows of dfeduc variable in linkco1991us_num dataset :

  Education |
  of Father |
     Detail |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        295        2.95        2.95
          1 |         15        0.15        3.10
          2 |         34        0.34        3.44
          3 |         73        0.73        4.17
          4 |         36        0.36        4.53
          5 |         44        0.44        4.97
          6 |        294        2.94        7.91
          7 |         51        0.51        8.42
          8 |        147        1.47        9.89
          9 |        314        3.14       13.03
         10 |        337        3.37       16.40
         11 |        549        5.49       21.89
         12 |      2,823       28.23       50.12
         13 |        382        3.82       53.94
         14 |        563        5.63       59.57
         15 |        205        2.05       61.62
         16 |        585        5.85       67.47
         17 |        499        4.99       72.46
         99 |      2,754       27.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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