Frequencies for first 10,000 rows of dfeduc variable in natl1987 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 |          7        0.07        0.16
          4 |          5        0.05        0.21
          5 |          7        0.07        0.28
          6 |         19        0.19        0.47
          7 |         51        0.51        0.98
          8 |        123        1.23        2.21
          9 |        261        2.61        4.82
         10 |        431        4.31        9.13
         11 |        482        4.82       13.95
         12 |      2,973       29.73       43.68
         13 |        368        3.68       47.36
         14 |        633        6.33       53.69
         15 |        262        2.62       56.31
         16 |        964        9.64       65.95
         17 |        533        5.33       71.28
         99 |      2,872       28.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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