Frequencies for first 10,000 rows of dfeduc variable in natl1976 dataset :

  Education |
  of Father |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          9        0.09        0.09
          1 |          4        0.04        0.13
          2 |          3        0.03        0.16
          3 |         12        0.12        0.28
          4 |         26        0.26        0.54
          5 |         23        0.23        0.77
          6 |         78        0.78        1.55
          7 |        156        1.56        3.11
          8 |        285        2.85        5.96
          9 |        415        4.15       10.11
         10 |        600        6.00       16.11
         11 |        643        6.43       22.54
         12 |      3,171       31.71       54.25
         13 |        389        3.89       58.14
         14 |        574        5.74       63.88
         15 |        214        2.14       66.02
         16 |        738        7.38       73.40
         17 |        475        4.75       78.15
         99 |      2,185       21.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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