Frequencies for first 10,000 rows of ufagecomb variable in natl2006 dataset :

   Father's |
   Combined |
    Age U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
         15 |          2        0.02        0.02
         16 |         17        0.17        0.19
         17 |         39        0.39        0.58
         18 |         83        0.83        1.41
         19 |        163        1.63        3.04
         20 |        280        2.80        5.84
         21 |        358        3.58        9.42
         22 |        414        4.14       13.56
         23 |        489        4.89       18.45
         24 |        442        4.42       22.87
         25 |        510        5.10       27.97
         26 |        505        5.05       33.02
         27 |        489        4.89       37.91
         28 |        503        5.03       42.94
         29 |        449        4.49       47.43
         30 |        454        4.54       51.97
         31 |        444        4.44       56.41
         32 |        421        4.21       60.62
         33 |        350        3.50       64.12
         34 |        353        3.53       67.65
         35 |        323        3.23       70.88
         36 |        291        2.91       73.79
         37 |        273        2.73       76.52
         38 |        219        2.19       78.71
         39 |        193        1.93       80.64
         40 |        167        1.67       82.31
         41 |        142        1.42       83.73
         42 |        121        1.21       84.94
         43 |        113        1.13       86.07
         44 |         77        0.77       86.84
         45 |         68        0.68       87.52
         46 |         50        0.50       88.02
         47 |         44        0.44       88.46
         48 |         43        0.43       88.89
         49 |         20        0.20       89.09
         50 |         23        0.23       89.32
         51 |         14        0.14       89.46
         52 |         18        0.18       89.64
         53 |         14        0.14       89.78
         54 |          8        0.08       89.86
         55 |         10        0.10       89.96
         56 |          5        0.05       90.01
         57 |          5        0.05       90.06
         58 |          1        0.01       90.07
         59 |          1        0.01       90.08
         60 |          2        0.02       90.10
         61 |          3        0.03       90.13
         65 |          1        0.01       90.14
         68 |          1        0.01       90.15
         76 |          1        0.01       90.16
         99 |        984        9.84      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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