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调查抽样中按规模成比例选择的两阶段抽样AI 解读

Särndal & Swensson (1987) have given a general framework of estimation in two-phase sampling assuming arbitrary probability by sampling designs in both the phases where the selections are without replacement. This note discusses a specific with replacement version of the scheme where a ratio of two variables is suggested as a measure of size of the units and a mean of the ratios-type estimator is proposed. A comparison is made with the Raj (1965) scheme employing the…

调查抽样中按规模成比例概率选择的两阶段抽样AI 解读

Särndal & Swensson (1987) have given a general framework of estimation in two-phase sampling assuming arbitrary probability by sampling designs in both the phases where the selections are without replacement. This note discusses a specific with replacement version of the scheme where a ratio of two variables is suggested as a measure of size of the units and a mean of the ratios-type estimator is proposed. A comparison is made with the Raj (1965) scheme employing the…

摘要暂缺

抽样调查中比率估计量的对偶方法AI 解读

This paper proposes a new product-type estimator which is complementary, in a certain sense, to the commonly used ratio estimator. Exact formulae for the bias and mean squared error can be derived which is not the case for the ratio estimator. The correction of the new estimator for bias is examined. A brief empirical study is also included.

Midzuno 抽样下 Horvitz–Thompson 估计量的修正AI 解读

A change of origin for the study variate is suggested under the Midzuno scheme of sampling from finite populations. The object is to improve the efficiency of the estimator of the population total. An empirical study is included.

抽样调查中比率估计量的一种对偶估计量AI 解读

This paper proposes a new product-type estimator which is complementary, in a certain sense, to the commonly used ratio estimator. Exact formulae for the bias and mean squared error can be derived which is not the case for the ratio estimator. The correction of the new estimator for bias is examined. A brief empirical study is also included.