Frequencies for first 10,000 rows of fage11 variable in natl1978 dataset :

     Age of |
     Father |
     Recode |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          1        0.01        0.01
          2 |        383        3.83        3.84
          3 |      2,318       23.18       27.02
          4 |      2,626       26.26       53.28
          5 |      1,541       15.41       68.69
          6 |        592        5.92       74.61
          7 |        220        2.20       76.81
          8 |         70        0.70       77.51
          9 |         30        0.30       77.81
         10 |         22        0.22       78.03
         11 |      2,197       21.97      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016