Frequencies for first 10,000 rows of state_cd variable in pos2015 dataset :

      State |
Abbreviatio |
          n |      Freq.     Percent        Cum.
------------+-----------------------------------
         AK |        281        2.81        2.81
         AL |      2,086       20.86       23.67
         AR |      2,099       20.99       44.66
         AZ |      1,811       18.11       62.77
         CA |      3,723       37.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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