Frequencies for first 10,000 rows of rectype variable in natl2003 dataset :

Record Type |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,335       83.35       83.35
          2 |      1,665       16.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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