Frequencies for first 10,000 rows of dmeduc variable in natlterr1997 dataset :

  Education |
  of Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          5        0.05        0.05
          2 |         14        0.14        0.19
          3 |         24        0.24        0.43
          4 |         34        0.34        0.77
          5 |         57        0.57        1.34
          6 |        150        1.50        2.84
          7 |        341        3.41        6.25
          8 |        464        4.64       10.89
          9 |        693        6.93       17.82
         10 |        550        5.50       23.32
         11 |        682        6.82       30.14
         12 |      2,810       28.10       58.24
         13 |        496        4.96       63.20
         14 |      1,293       12.93       76.13
         15 |        533        5.33       81.46
         16 |      1,521       15.21       96.67
         17 |        306        3.06       99.73
         99 |         27        0.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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