Frequencies for first 10,000 rows of dmeduc variable in natl1992 dataset :

  Education |
  of Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          4        0.04        0.04
          2 |          2        0.02        0.06
          3 |          3        0.03        0.09
          4 |          4        0.04        0.13
          5 |          4        0.04        0.17
          6 |         24        0.24        0.41
          7 |        104        1.04        1.45
          8 |        274        2.74        4.19
          9 |        517        5.17        9.36
         10 |        715        7.15       16.51
         11 |        809        8.09       24.60
         12 |      3,619       36.19       60.79
         13 |        817        8.17       68.96
         14 |      1,055       10.55       79.51
         15 |        360        3.60       83.11
         16 |      1,223       12.23       95.34
         17 |        449        4.49       99.83
         99 |         17        0.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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