I am hoping to use the SamplingStrata R package for a dataset describing a
population of businesses wherein I have information on the type of
business, as well as, for designated employment number bands, number of
employees and business turnover information. So ideally the stratification
will be business type X business size. I am not 100% sure what "domains"
(in the vernacular of the package) would be referring to in this case? Also
can I employ both number of employees and business turnover information to
optimise the stratification sampling procedure?