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两阶段抽样中基于超总体模型的方差估计AI 解读

Estimators for finite population parameters and their variances in two-stage sampling have been developed by using the linear least-squares prediction approach in a recent article by Royall (1976). This article considers a special case of the superpopulation model assumed by Royall and uses a new technique involving linear combinations of the sample observations to estimate the variances of these estimators. An exact confidence interval for the finite population total is…

嵌套分类中方差分量线性组合的精确置信区间AI 解读

Methodology is proposed for the construction of exact confidence intervals on nonnegative linear combinations of variance components from nested classification models. Examples are given for the one-fold and two-fold classifications. The robustness of these confidence intervals to model breakdown is also discussed.