Frequencies for low variable in drg2001 dataset :

 Low Volume |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        470       91.98       91.98
          * |         41        8.02      100.00
------------+-----------------------------------
      Total |        511      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016