Frequencies for first 10,000 rows of dmeduc variable in natl1985 dataset :

  Education |
  of Mother |
     Detail |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          3        0.03        0.03
          1 |          2        0.02        0.05
          2 |          2        0.02        0.07
          3 |          6        0.06        0.13
          4 |          5        0.05        0.18
          5 |         12        0.12        0.30
          6 |         35        0.35        0.65
          7 |        103        1.03        1.68
          8 |        320        3.20        4.88
          9 |        552        5.52       10.40
         10 |        857        8.57       18.97
         11 |        939        9.39       28.36
         12 |      4,065       40.65       69.01
         13 |        719        7.19       76.20
         14 |        807        8.07       84.27
         15 |        268        2.68       86.95
         16 |        909        9.09       96.04
         17 |        367        3.67       99.71
         99 |         29        0.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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