Frequencies for first 10,000 rows of dmeduc variable in natl1994 dataset :

  Education |
  of Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          1 |          5        0.05        0.06
          2 |          3        0.03        0.09
          3 |          1        0.01        0.10
          4 |          4        0.04        0.14
          5 |          7        0.07        0.21
          6 |         28        0.28        0.49
          7 |        116        1.16        1.65
          8 |        269        2.69        4.34
          9 |        500        5.00        9.34
         10 |        714        7.14       16.48
         11 |        863        8.63       25.11
         12 |      3,513       35.13       60.24
         13 |        892        8.92       69.16
         14 |      1,048       10.48       79.64
         15 |        386        3.86       83.50
         16 |      1,104       11.04       94.54
         17 |        501        5.01       99.55
         99 |         45        0.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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