Frequencies for first 10,000 rows of mage36 variable in natl1993 dataset :

     Age of |
     Mother |
  recode 36 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         77        0.77        0.77
          2 |        137        1.37        2.14
          3 |        279        2.79        4.93
          4 |        356        3.56        8.49
          5 |        509        5.09       13.58
          6 |        606        6.06       19.64
          7 |        650        6.50       26.14
          8 |        706        7.06       33.20
          9 |        628        6.28       39.48
         10 |        567        5.67       45.15
         11 |        569        5.69       50.84
         12 |        532        5.32       56.16
         13 |        558        5.58       61.74
         14 |        496        4.96       66.70
         15 |        549        5.49       72.19
         16 |        471        4.71       76.90
         17 |        448        4.48       81.38
         18 |        382        3.82       85.20
         19 |        330        3.30       88.50
         20 |        255        2.55       91.05
         21 |        238        2.38       93.43
         22 |        173        1.73       95.16
         23 |        160        1.60       96.76
         24 |        111        1.11       97.87
         25 |         85        0.85       98.72
         26 |         46        0.46       99.18
         27 |         33        0.33       99.51
         28 |         19        0.19       99.70
         29 |         16        0.16       99.86
         30 |         10        0.10       99.96
         31 |          2        0.02       99.98
         32 |          1        0.01       99.99
         34 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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