Frequencies for first 10,000 rows of centcity variable in morg01 dataset :

    Central city |
          status |      Freq.     Percent        Cum.
-----------------+-----------------------------------
    Central City |      2,571       25.71       25.71
  Balance Of MSA |      4,010       40.10       65.81
Non-Metropolitan |      1,956       19.56       85.37
               . |      1,463       14.63      100.00
-----------------+-----------------------------------
           Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Mar 2017