Frequencies for first 10,000 rows of state_cd variable in pos2005 dataset :

      state |
abbreviatio |
          n |      Freq.     Percent        Cum.
------------+-----------------------------------
         AK |        240        2.40        2.40
         AL |      1,751       17.51       19.91
         AR |      1,830       18.30       38.21
         AZ |      1,321       13.21       51.42
         CA |      4,858       48.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017