Frequencies for first 10,000 rows of rectype variable in natlterr2006 dataset :

Record Type |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,513       75.13       75.13
          2 |      2,487       24.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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