Frequencies for first 10,000 rows of mager41 variable in natlterr2003 dataset :

   Mother's |
 Age Recode |
     41 U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         41        0.41        0.41
          2 |        131        1.31        1.72
          3 |        248        2.48        4.20
          4 |        352        3.52        7.72
          5 |        454        4.54       12.26
          6 |        567        5.67       17.93
          7 |        601        6.01       23.94
          8 |        721        7.21       31.15
          9 |        666        6.66       37.81
         10 |        647        6.47       44.28
         11 |        646        6.46       50.74
         12 |        565        5.65       56.39
         13 |        552        5.52       61.91
         14 |        532        5.32       67.23
         15 |        431        4.31       71.54
         16 |        433        4.33       75.87
         17 |        398        3.98       79.85
         18 |        375        3.75       83.60
         19 |        361        3.61       87.21
         20 |        272        2.72       89.93
         21 |        234        2.34       92.27
         22 |        213        2.13       94.40
         23 |        150        1.50       95.90
         24 |        130        1.30       97.20
         25 |         85        0.85       98.05
         26 |         72        0.72       98.77
         27 |         49        0.49       99.26
         28 |         35        0.35       99.61
         29 |         20        0.20       99.81
         30 |          6        0.06       99.87
         31 |          3        0.03       99.90
         32 |          6        0.06       99.96
         33 |          2        0.02       99.98
         34 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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