Frequencies for first 10,000 rows of mager14 variable in natl2007 dataset :

   Mother's |
 Age Recode |
     14 U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          4        0.04        0.04
          3 |         25        0.25        0.29
          4 |         64        0.64        0.93
          5 |        154        1.54        2.47
          6 |        277        2.77        5.24
          7 |        481        4.81       10.05
          8 |      3,029       30.29       40.34
          9 |      2,880       28.80       69.14
         10 |      1,881       18.81       87.95
         11 |        943        9.43       97.38
         12 |        239        2.39       99.77
         13 |         20        0.20       99.97
         14 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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