Develop ratio estimation function(s)

[davidcurrie2001]

WGRDBES-EST has developed a first set of functions that carry out the simpler forms of design-based estimation. WGRDBES-EST will continue and finalize that work, extending it to more complex statistical estimation methods namely ratio estimation.

[davidcurrie2001]

WGCatch have looked at how countries are doing ratio estimation: https://doi.org/10.17895/ices.pub.7428