Frequencies for first 10,000 rows of mager14 variable in natl2013 dataset :

   Mother's |
 Age Recode |
     14 U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          6        0.06        0.06
          3 |         22        0.22        0.28
          4 |         39        0.39        0.67
          5 |         86        0.86        1.53
          6 |        166        1.66        3.19
          7 |        323        3.23        6.42
          8 |      2,621       26.21       32.63
          9 |      3,110       31.10       63.73
         10 |      2,359       23.59       87.32
         11 |      1,014       10.14       97.46
         12 |        233        2.33       99.79
         13 |         18        0.18       99.97
         14 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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