Frequencies for first 10,000 rows of rectype variable in natlterr2005 dataset :

Record Type |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,505       75.05       75.05
          2 |      2,495       24.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015