Frequencies for first 10,000 rows of econds_2 variable in mortterr2007 dataset :

Sequence of |
  condition |
     within |
part/line 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,571       85.71       85.71
          2 |        665        6.65       92.36
          . |        764        7.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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