Frequencies for first 10,000 rows of dmeduc variable in natl1995 dataset :

  Education |
  of Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          1 |          5        0.05        0.06
          2 |          1        0.01        0.07
          3 |          7        0.07        0.14
          4 |          5        0.05        0.19
          5 |          5        0.05        0.24
          6 |         21        0.21        0.45
          7 |        110        1.10        1.55
          8 |        260        2.60        4.15
          9 |        530        5.30        9.45
         10 |        675        6.75       16.20
         11 |        809        8.09       24.29
         12 |      3,399       33.99       58.28
         13 |        822        8.22       66.50
         14 |      1,157       11.57       78.07
         15 |        372        3.72       81.79
         16 |      1,187       11.87       93.66
         17 |        580        5.80       99.46
         99 |         54        0.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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