Frequencies for first 10,000 rows of rectype variable in natl1969 dataset :

Record type |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,410       84.10       84.10
          2 |      1,590       15.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016