Frequencies for first 10,000 rows of region variable in namcs2007 dataset :

 geographic |
     region |      Freq.     Percent        Cum.
------------+-----------------------------------
  northeast |      1,777       17.77       17.77
    midwest |      2,967       29.67       47.44
      south |      3,894       38.94       86.38
       west |      1,362       13.62      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016