Frequencies for first 10,000 rows of rectype variable in natl2001 dataset :

Record Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,913       69.13       69.13
          2 |      3,087       30.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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