Frequencies for first 10,000 rows of ufagecomb variable in natl2003 dataset :

   Father's |
   Combined |
      Age U |      Freq.     Percent        Cum.
------------+-----------------------------------
         15 |          1        0.01        0.01
         16 |          8        0.08        0.09
         17 |         44        0.44        0.53
         18 |         72        0.72        1.25
         19 |        155        1.55        2.80
         20 |        267        2.67        5.47
         21 |        335        3.35        8.82
         22 |        411        4.11       12.93
         23 |        462        4.62       17.55
         24 |        435        4.35       21.90
         25 |        435        4.35       26.25
         26 |        474        4.74       30.99
         27 |        488        4.88       35.87
         28 |        469        4.69       40.56
         29 |        436        4.36       44.92
         30 |        446        4.46       49.38
         31 |        428        4.28       53.66
         32 |        458        4.58       58.24
         33 |        396        3.96       62.20
         34 |        328        3.28       65.48
         35 |        328        3.28       68.76
         36 |        284        2.84       71.60
         37 |        273        2.73       74.33
         38 |        215        2.15       76.48
         39 |        199        1.99       78.47
         40 |        201        2.01       80.48
         41 |        127        1.27       81.75
         42 |        126        1.26       83.01
         43 |        107        1.07       84.08
         44 |         92        0.92       85.00
         45 |         71        0.71       85.71
         46 |         53        0.53       86.24
         47 |         36        0.36       86.60
         48 |         34        0.34       86.94
         49 |         36        0.36       87.30
         50 |         26        0.26       87.56
         51 |         19        0.19       87.75
         52 |         15        0.15       87.90
         53 |         15        0.15       88.05
         54 |          9        0.09       88.14
         55 |          6        0.06       88.20
         56 |         12        0.12       88.32
         57 |          6        0.06       88.38
         58 |          4        0.04       88.42
         59 |          2        0.02       88.44
         60 |          1        0.01       88.45
         62 |          1        0.01       88.46
         67 |          1        0.01       88.47
         72 |          1        0.01       88.48
         99 |      1,152       11.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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