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Business Employment Dynamics: Tabulations by Employer Size
The authors discuss the alternative statistical methodologies that the BLS considered for creating size class tabulations from the Business Employment Dynamics data. The primary focus is on four methodologies: quarterly base-sizing, annual base-sizing, mean-sizing, and dynamic-sizing. They discuss the evaluation criteria that BLS considered for choosing its official size class methodology.
Link
http://econpapers.repec.org/scripts/redir.pl?u=http%3A%2F%2Fwww.bls.gov%2Fore%2Fpdf%2Fec050110.pdf;h=repec:bls:wpaper:ec050110