Frequencies for first 10,000 rows of rectype variable in natl1997 dataset :

Record type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,109       71.09       71.09
          2 |      2,891       28.91      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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