The proportion to sample can be expressed as a single number between 0
and 1. If @code{k} is the number specified, and @code{N} is the number
of currently-selected cases in the active file, then after
The proportion to sample can be expressed as a single number between 0
and 1. If @code{k} is the number specified, and @code{N} is the number
of currently-selected cases in the active file, then after