期刊名称：Sankhya. Series A, mathematical statistics and probability
印刷版ISSN：0976-836X
电子版ISSN：0976-8378
出版年度：2011
卷号：73
期号：01
页码：142--161
出版社：Indian Statistical Institute
摘要：In the ranked set sampling algorithm a sample of size n2 is available. The
data can be ranked without measurements. A subsample of size n is created
using the information given by the ranks. The population mean is estimated
by the subsample mean. In this paper, we investigate other ways for creating
the subsample. To this end we introduce new sampling algorithms using the
idea of antithetic variables. We propose a class of random estimators for the
population mean which covers the ranked set sampling and simple random
sampling estimators as special cases. A general dominance result leading to a
su¡Àcient condition for a random estimator ^11 to dominate another random
estimator ^12 is established. The theory is done in a completely nonpara-
metric basis and without making any assumption about the distribution of
the underlying population. Finally, the superiority of our proposed estima-
tors over the ranked set sampling estimator is established and the obtained
results are evaluated through examples and numerical studies.
关键词：Antithetic variables, ranked set sampling, simple
random sampling, random estimators, nonparametric estimation
