Components of Change in Repeated Suveys

1989

1-18

Artikel

12564S

204715

Proposals are made for decomposing net change of popoluation means and totals through time into components which are interpretable and lead to a better understanding of net change. The framework is extended to allow for non-stationary populations with births, deaths and changing characteristics of continuing members. Design and estimation issues are investigated and a number of numerical examples given.Keywords: Unbiased estimators, Estimation bias, Population dynamics, Population estimates, Consistent estimators, Population mean, Survey design, Statistical variance, change, composite estimation, domain, gross flow, repeted survey, rotation design.