Frequencies for first 10,000 rows of wt_cod variable in demo2005q4 dataset :

       Unit |
abbreviatio |
      n for |
  patient's |
     weight |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,387       73.87       73.87
         KG |      2,061       20.61       94.48
        LBS |        552        5.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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