Frequencies for first 10,000 rows of mager14 variable in natlterr2009 dataset :

   Mother's |
 Age Recode |
     14 U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         28        0.28        0.28
          3 |         87        0.87        1.15
          4 |        187        1.87        3.02
          5 |        349        3.49        6.51
          6 |        433        4.33       10.84
          7 |        553        5.53       16.37
          8 |      3,017       30.17       46.54
          9 |      2,521       25.21       71.75
         10 |      1,702       17.02       88.77
         11 |        887        8.87       97.64
         12 |        229        2.29       99.93
         13 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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