A family of estimators of population variance in two-occasion rotation patterns

Abstract

In this article, we have considered the problem of estimation of population variance on current (second) occasion in two occasion successive (rotation) sampling. A class of estimators of population variance has been proposed and its asymptotic properties have been discussed. The proposed class of estimators is compared with the sample variance estimator when there is no matching from the previous occasion and the Singh et al. (2013) estimator. Optimum replacement policy is discussed. It has been shown that the suggested estimator is more efficient than the Singh et al. (2013) estimator and a usual unbiased estimator when there is no matching. An empirical study is carried out in support of the present study.     

Use of several auxiliary variables in estimating the population mean in a two-occasion rotation pattern

ABSTRACT

This paper addresses the problem of estimation of the population mean on the current (second) occasion in two-occasion successive sampling. Utilizing the readily available information on several auxiliary variables on both occasions and the information on the study variable from the previous occasion, an estimation procedure of the population mean on the current occasion has been proposed. Theoretical properties of the proposed estimator have been investigated. Optimum replacement policy to the proposed estimator has been discussed. The proposed estimator has been compared empirically with the sample mean estimator, when there is no matching and the optimum estimator which is a linear combination of the means of the matched and unmatched portions of the sample at the current occasion. Appropriate recommendations have been made for practical applications.     

On the Use of Superpopulation Model in Estimation of Population Mean in Two-Occasion Rotation Patterns

The present work is an attempt to study the estimation of the population mean on the current occasion in two-occasion successive (rotation) sampling under a superpopulation model. Six different estimators are proposed for estimating the current population mean in two-occasion successive (rotation) sampling. Optimum replacement policies and performances of the proposed estimators have been discussed. Results are interpreted via empirical studies.     

Effective Rotation Patterns Under Non Response in Two-Occasion Successive Sampling

This article intends to develop some effective rotation patterns with the aid of attractive imputation methods when the problems of non response occur in two-occasion successive sampling. Utilizing the information on p (p ??1) auxiliary variables regression methods of imputation have been considered and subsequently multiple linear regression type estimators are proposed to estimate the current population mean in two-occasion successive sampling. Proposed estimators are compared with the estimator for same situations but in the absence of non-response. Optimum replacement strategies of the respective estimators have been discussed and results are interpreted with the help of empirical studies. Conclusions and suitable recommendations are made.     

Goals for Statistical Uses of Administrative Records: The Next 10 Years

United States statistical agencies use data from administrative record systems to develop program statistics, to establish statistical data bases, and to enhance and evaluate census and survey data. Such uses of administrative records are likely to increase as efforts to control costs and respondent burden of statistical programs continue. This review article proposes six goals for enhanced statistical uses of administrative records in the next 10 years and describes elements of an activist strategy to achieve them. The discussants, representing three agencies that make important statistical uses of administrative records, give their reactions to the proposed goals and strategy.     

Comment: The Future of Administrative Records in the Economic Programs of the Census Bureau

Using recently developed statistical tools for analyzing cointegrated 1(2) data, this article models money, income, prices, and interest rates in Denmark. The final model describes the dynamic adjustment to short-run changes of the process, to deviations from long-run steady states, and to several political interventions. It provides new insights about the effects of the liberalization of trade and capital in a small open European economy.     

唐代矿业政策初论

唐王朝建立后,对矿业实行了以官营优先为前提的公私兼营政策,一方面由政府经营管理着部分矿业,另一方面也允许私人经营。对私营矿业的管理前后有所变化：唐前期,政府设冶监官营处,私人可以采矿,但要向冶监交纳矿税,而不设冶监官营处,私人亦可采矿,也可以矿产向当地政府折充课役。大约到开元九、十年稍前时,政府制定了专门的令、式条文向私营矿业征税,此后在管理上逐步予以加强。     

如何看待当前“消费无热点”

近年来,消费无热点成为人们对国内经济走向普遍持悲观论调的依据之一.通过对消费现状形成原因的剖折和分类,可以认为我国的消费无热点既有其客观合理性,又有一些体制因素,需要进行政策引导,以促进消费增长.     

建国来我国婴幼儿照护服务政策：发展历程、演进逻辑与行动展望

回顾建国后婴幼儿照护服务政策的发展历程可为未来婴幼儿照护服务的发展提供历史镜鉴。梳理已有婴幼儿照护服务政策,可以发现婴幼儿照护服务遵循着以供需矛盾为表征的政策动力机制、以普惠公益为目标的政策服务定位、以责任分担为机制的政策服务路径等演进逻辑。未来应在理顺政府、市场及家庭的定位与职责的基础上增加婴幼儿照护服务的有效供给、加快顶层设计的同时明确婴幼儿照护服务的主管部门、完善政策配套实施的方式上激发婴幼儿照护服务内生发展动力,促进婴幼儿照护服务良性发展。     

日本“江户锁国论”质疑

“江户锁国论”在日本史学界流传已久 ,然而这种表述并不符合历史事实。江户幕府“锁国”的目标仅仅在于铲除危害其统治的天主教信仰。关于德川幕府的禁书政策是“锁国体制”下全面抵制西洋文化的重要一环的说法也是一种误解。历史事实是 ,在江户时代 ,除与天主教有关的汉译西书 4 8种之外 ,有关西方的书籍大量流入日本 ,从而促发了日本人学习西方近代科学和社会思想的兰学运动。江户时代 ,除抵制天主教之外 ,不但没有割断与世界的联系 ,而且吸收了大量的西方近代文化。“江户锁国论”的传统认识影响了人们对江户时代整体评价的客观性