Frequencies for first 10,000 rows of mage8 variable in natl1994 dataset :

     Age of |
     Mother |
   recode 8 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         71        0.71        0.71
          2 |      1,797       17.97       18.68
          3 |      3,097       30.97       49.65
          4 |      2,606       26.06       75.71
          5 |      1,683       16.83       92.54
          6 |        657        6.57       99.11
          7 |         88        0.88       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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