Frequencies for first 10,000 rows of dmeduc variable in natl1982 dataset :

  Education |
  of Mother |
     Detail |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          2        0.02        0.02
          2 |          3        0.03        0.05
          3 |          3        0.03        0.08
          4 |          3        0.03        0.11
          5 |         13        0.13        0.24
          6 |         34        0.34        0.58
          7 |        113        1.13        1.71
          8 |        327        3.27        4.98
          9 |        650        6.50       11.48
         10 |        878        8.78       20.26
         11 |        995        9.95       30.21
         12 |      4,106       41.06       71.27
         13 |        677        6.77       78.04
         14 |        757        7.57       85.61
         15 |        234        2.34       87.95
         16 |        828        8.28       96.23
         17 |        360        3.60       99.83
         99 |         17        0.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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