Frequencies for first 10,000 rows of state_cd variable in pos2003 dataset :

      state |
abbreviatio |
          n |      Freq.     Percent        Cum.
------------+-----------------------------------
         AK |        219        2.19        2.19
         AL |      1,666       16.66       18.85
         AR |      1,744       17.44       36.29
         AZ |      1,238       12.38       48.67
         CA |      5,133       51.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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