Frequencies for first 10,000 rows of dmeduc variable in natlterr2002 dataset :

  Education |
  of Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          4        0.04        0.04
          1 |          2        0.02        0.06
          2 |          8        0.08        0.14
          3 |         13        0.13        0.27
          4 |         17        0.17        0.44
          5 |         22        0.22        0.66
          6 |        104        1.04        1.70
          7 |        233        2.33        4.03
          8 |        305        3.05        7.08
          9 |        611        6.11       13.19
         10 |        454        4.54       17.73
         11 |        670        6.70       24.43
         12 |      3,065       30.65       55.08
         13 |        540        5.40       60.48
         14 |      1,295       12.95       73.43
         15 |        501        5.01       78.44
         16 |      1,823       18.23       96.67
         17 |        306        3.06       99.73
         99 |         27        0.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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