Frequencies for first 10,000 rows of mager9 variable in natl2012 dataset :

   Mother's |
 Age Recode |
      9 U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          6        0.06        0.06
          2 |        737        7.37        7.43
          3 |      2,675       26.75       34.18
          4 |      3,030       30.30       64.48
          5 |      2,297       22.97       87.45
          6 |        978        9.78       97.23
          7 |        258        2.58       99.81
          8 |         14        0.14       99.95
          9 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 5 May 2016