Frequencies for first 10,000 rows of dmeduc variable in natl1997 dataset :

  Education |
  of Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          2        0.02        0.02
          2 |          4        0.04        0.06
          3 |          2        0.02        0.08
          4 |          6        0.06        0.14
          5 |          9        0.09        0.23
          6 |         38        0.38        0.61
          7 |         87        0.87        1.48
          8 |        239        2.39        3.87
          9 |        496        4.96        8.83
         10 |        662        6.62       15.45
         11 |        812        8.12       23.57
         12 |      3,279       32.79       56.36
         13 |        832        8.32       64.68
         14 |      1,188       11.88       76.56
         15 |        391        3.91       80.47
         16 |      1,342       13.42       93.89
         17 |        579        5.79       99.68
         99 |         32        0.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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