Frequencies for first 10,000 rows of dmeduc variable in natlterr1996 dataset :

  Education |
  of Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          3        0.03        0.03
          1 |          6        0.06        0.09
          2 |          9        0.09        0.18
          3 |         35        0.35        0.53
          4 |         53        0.53        1.06
          5 |         63        0.63        1.69
          6 |        154        1.54        3.23
          7 |        352        3.52        6.75
          8 |        439        4.39       11.14
          9 |        703        7.03       18.17
         10 |        513        5.13       23.30
         11 |        715        7.15       30.45
         12 |      2,768       27.68       58.13
         13 |        496        4.96       63.09
         14 |      1,306       13.06       76.15
         15 |        538        5.38       81.53
         16 |      1,519       15.19       96.72
         17 |        299        2.99       99.71
         99 |         29        0.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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