Frequencies for first 10,000 rows of mager variable in natlterr2015 dataset :

   Mother's |
     Single |
   Years of |
  Age 12 10 |
-- 12 years |      Freq.     Percent        Cum.
------------+-----------------------------------
         13 |          4        0.04        0.04
         14 |          7        0.07        0.11
         15 |         41        0.41        0.52
         16 |         78        0.78        1.30
         17 |        176        1.76        3.06
         18 |        269        2.69        5.75
         19 |        436        4.36       10.11
         20 |        526        5.26       15.37
         21 |        606        6.06       21.43
         22 |        615        6.15       27.58
         23 |        632        6.32       33.90
         24 |        611        6.11       40.01
         25 |        588        5.88       45.89
         26 |        556        5.56       51.45
         27 |        546        5.46       56.91
         28 |        507        5.07       61.98
         29 |        493        4.93       66.91
         30 |        426        4.26       71.17
         31 |        433        4.33       75.50
         32 |        383        3.83       79.33
         33 |        364        3.64       82.97
         34 |        325        3.25       86.22
         35 |        325        3.25       89.47
         36 |        248        2.48       91.95
         37 |        216        2.16       94.11
         38 |        170        1.70       95.81
         39 |        137        1.37       97.18
         40 |         98        0.98       98.16
         41 |         81        0.81       98.97
         42 |         44        0.44       99.41
         43 |         27        0.27       99.68
         44 |          8        0.08       99.76
         45 |         11        0.11       99.87
         46 |          4        0.04       99.91
         47 |          2        0.02       99.93
         48 |          2        0.02       99.95
         49 |          1        0.01       99.96
         50 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Oct 2016