Frequencies for first 10,000 rows of region variable in sf12010880us18 dataset :

    Region7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,888       68.88       68.88
          3 |      2,900       29.00       97.88
          9 |        212        2.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017