Frequencies for first 10,000 rows of rectype variable in natl1991 dataset :

Record type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,923       69.23       69.23
          2 |      3,077       30.77      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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