Frequencies for first 10,000 rows of state_cd variable in pos2012 dataset :

      State |
Abbreviatio |
          n |      Freq.     Percent        Cum.
------------+-----------------------------------
         AK |        279        2.79        2.79
         AL |      2,091       20.91       23.70
         AR |      2,062       20.62       44.32
         AZ |      1,747       17.47       61.79
         CA |      3,821       38.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016