Frequencies for first 10,000 rows of wt_cod variable in demo2009q2 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
     weight |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,812       68.12       68.12
         KG |      2,716       27.16       95.28
        LBS |        472        4.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Dec 2015