Frequencies for first 10,000 rows of mager14 variable in natl2003 dataset :

   Mother's |
 Age Recode |
     14 U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         16        0.16        0.16
          3 |         29        0.29        0.45
          4 |         84        0.84        1.29
          5 |        207        2.07        3.36
          6 |        293        2.93        6.29
          7 |        436        4.36       10.65
          8 |      2,890       28.90       39.55
          9 |      2,644       26.44       65.99
         10 |      2,055       20.55       86.54
         11 |      1,031       10.31       96.85
         12 |        293        2.93       99.78
         13 |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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