Frequencies for first 10,000 rows of dmeduc variable in natl2003 dataset :

   Mother's |
  Education |
        RFP |
647=f_med U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          1        0.01        0.01
          2 |          2        0.02        0.03
          3 |          3        0.03        0.06
          4 |          4        0.04        0.10
          5 |          2        0.02        0.12
          6 |         17        0.17        0.29
          7 |         27        0.27        0.56
          8 |        112        1.12        1.68
          9 |        267        2.67        4.35
         10 |        384        3.84        8.19
         11 |        578        5.78       13.97
         12 |      3,959       39.59       53.56
         13 |      1,092       10.92       64.48
         14 |      1,154       11.54       76.02
         15 |        303        3.03       79.05
         16 |      1,215       12.15       91.20
         17 |        536        5.36       96.56
         99 |        344        3.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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