Frequencies for first 10,000 rows of dmeduc variable in natl2001 dataset :

  Education |
  of Mother |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          3        0.03        0.03
          2 |         10        0.10        0.13
          3 |          8        0.08        0.21
          4 |         15        0.15        0.36
          5 |         13        0.13        0.49
          6 |         73        0.73        1.22
          7 |         64        0.64        1.86
          8 |        192        1.92        3.78
          9 |        463        4.63        8.41
         10 |        611        6.11       14.52
         11 |        855        8.55       23.07
         12 |      3,254       32.54       55.61
         13 |        763        7.63       63.24
         14 |      1,247       12.47       75.71
         15 |        412        4.12       79.83
         16 |      1,348       13.48       93.31
         17 |        653        6.53       99.84
         99 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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