Frequencies for first 10,000 rows of meduc14 variable in natl1977 dataset :

  Education |
  of Mother |
  Recode 14 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         51        0.51        0.51
          2 |         75        0.75        1.26
          3 |        176        1.76        3.02
          4 |        488        4.88        7.90
          5 |        844        8.44       16.34
          6 |      1,099       10.99       27.33
          7 |      1,090       10.90       38.23
          8 |      4,080       40.80       79.03
          9 |        526        5.26       84.29
         10 |        514        5.14       89.43
         11 |        203        2.03       91.46
         12 |        601        6.01       97.47
         13 |        213        2.13       99.60
         14 |         40        0.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016