Frequencies for first 10,000 rows of smsa04 variable in morg12 dataset :

Metropolita |
     n Area |
(CBSA) size |
       code |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,930       19.30       19.30
          2 |        744        7.44       26.74
          3 |      1,145       11.45       38.19
          4 |      1,096       10.96       49.15
          5 |      1,474       14.74       63.89
          6 |      1,648       16.48       80.37
          7 |      1,963       19.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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