Finite Population Sampling and Robust Estimation
有限总体抽样与稳健估计
The work of Royall and Herson (1973a, 1973b), ensuring the robustness of the standard ratio estimator against polynomial superpopulation models by choosing balanced samples, is extended to a more general regression estimator. The requirement for robustness is then a relationship between the moments of the sample units and those of the remainder of the population which may be achieved approximately by unequal probability sampling.