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arXiv 1702.04552stat.MEstat.AP
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一类新的稳健双样本Wald型检验

A new class of robust two-sample Wald-type tests

Abhik Ghosh, Nirian Martin, Ayanendranath Basu, Leandro Pardo

摘要:

与两个独立样本相关的参数假设检验经常出现在生物学、医学、流行病学、可靠性等许多应用中。在本文中,我们提出了强大的Wald型测试这样的两个样本问题,使用最小密度功率发散估计的基本参数。特别是,我们认为简单的两个样本的假设,以及一般的两个样本(复合)假设,涉及滋扰参数的样本的全参数同质性。提出的Wald型检验的渐近和理论的鲁棒性已经开发的简单和一般的复合假设。一些特殊的情况下,测试对片面的替代品进行了讨论,特别注意测试的有效性,在临床试验中的治疗。所提出的测试的性能也通过适当的实际数据的例子数值说明。

英文摘要:

Parametric hypothesis testing associated with two independent samples arises frequently in several applications in biology, medical sciences, epidemiology, reliability and many more. In this paper, we propose robust Wald-type tests for testing such two sample problems using the minimum density power divergence estimators of the underlying parameters. In particular, we consider the simple two-sample hypothesis concerning the full parametric homogeneity of the samples as well as the general two-sample (composite) hypotheses involving nuisance parameters also. The asymptotic and theoretical robustness properties of the proposed Wald-type tests have been developed for both the simple and general composite hypotheses. Some particular cases of testing against one-sided alternatives are discussed with specific attention to testing the effectiveness of a treatment in clinical trials. Performances of the proposed tests have also been illustrated numerically through appropriate real data examples.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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