Frequencies for first 10,000 rows of bwtr12 variable in natl2014 dataset :

      Birth |
     Weight |
  Recode 12 |
  01 0227 - |
 0499 grams |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          7        0.07        0.07
          2 |         33        0.33        0.40
          3 |         42        0.42        0.82
          4 |        118        1.18        2.00
          5 |        384        3.84        5.84
          6 |      1,357       13.57       19.41
          7 |      3,557       35.57       54.98
          8 |      3,171       31.71       86.69
          9 |      1,118       11.18       97.87
         10 |        191        1.91       99.78
         11 |         19        0.19       99.97
         12 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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