Frequencies for first 10,000 rows of dmeduc variable in natl1991 dataset :

  Education |
  of Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          4 |          3        0.03        0.03
          5 |          6        0.06        0.09
          6 |         30        0.30        0.39
          7 |        105        1.05        1.44
          8 |        271        2.71        4.15
          9 |        523        5.23        9.38
         10 |        765        7.65       17.03
         11 |        926        9.26       26.29
         12 |      3,709       37.09       63.38
         13 |        834        8.34       71.72
         14 |        956        9.56       81.28
         15 |        322        3.22       84.50
         16 |      1,061       10.61       95.11
         17 |        456        4.56       99.67
         99 |         33        0.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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