Frequencies for first 10,000 rows of dmeduc variable in natl1999 dataset :

  Education |
  of Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          3        0.03        0.03
          2 |         11        0.11        0.14
          3 |          7        0.07        0.21
          4 |          7        0.07        0.28
          5 |         10        0.10        0.38
          6 |         50        0.50        0.88
          7 |         65        0.65        1.53
          8 |        206        2.06        3.59
          9 |        476        4.76        8.35
         10 |        692        6.92       15.27
         11 |        804        8.04       23.31
         12 |      3,232       32.32       55.63
         13 |        829        8.29       63.92
         14 |      1,246       12.46       76.38
         15 |        375        3.75       80.13
         16 |      1,279       12.79       92.92
         17 |        681        6.81       99.73
         99 |         27        0.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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