Frequencies for first 10,000 rows of mager14 variable in natl2006 dataset :

   Mother's |
 Age Recode |
     14 U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          8        0.08        0.08
          3 |         35        0.35        0.43
          4 |         82        0.82        1.25
          5 |        173        1.73        2.98
          6 |        295        2.95        5.93
          7 |        423        4.23       10.16
          8 |      2,955       29.55       39.71
          9 |      2,789       27.89       67.60
         10 |      1,924       19.24       86.84
         11 |      1,059       10.59       97.43
         12 |        236        2.36       99.79
         13 |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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