Frequencies for first 10,000 rows of bwtr12 variable in natlterr2014 dataset :

      Birth |
     Weight |
  Recode 12 |
  01 0227 - |
 0499 grams |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          5        0.05        0.05
          2 |         41        0.41        0.46
          3 |         56        0.56        1.02
          4 |        139        1.39        2.41
          5 |        568        5.68        8.09
          6 |      2,372       23.72       31.81
          7 |      4,136       41.36       73.17
          8 |      2,054       20.54       93.71
          9 |        482        4.82       98.53
         10 |         89        0.89       99.42
         11 |         13        0.13       99.55
         12 |         45        0.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Jun 2016