Statistical tests under Dallal's model: Asymptotic and exact methods.

This paper proposes asymptotic and exact methods for testing the equality of correlations for multiple bilateral data under Dallal's model. Three asymptotic test statistics are derived for large samples. Since they are not applicable to small data, several conditional and unconditional exact me...

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Main Authors: Zhiming Li, Changxing Ma, Mingyao Ai
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2020-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0242722
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author Zhiming Li
Changxing Ma
Mingyao Ai
author_facet Zhiming Li
Changxing Ma
Mingyao Ai
author_sort Zhiming Li
collection DOAJ
description This paper proposes asymptotic and exact methods for testing the equality of correlations for multiple bilateral data under Dallal's model. Three asymptotic test statistics are derived for large samples. Since they are not applicable to small data, several conditional and unconditional exact methods are proposed based on these three statistics. Numerical studies are conducted to compare all these methods with regard to type I error rates (TIEs) and powers. The results show that the asymptotic score test is the most robust, and two exact tests have satisfactory TIEs and powers. Some real examples are provided to illustrate the effectiveness of these tests.
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spelling doaj.art-a33f7cd5fa204ab398f684822b8c0b402022-12-21T17:16:40ZengPublic Library of Science (PLoS)PLoS ONE1932-62032020-01-011511e024272210.1371/journal.pone.0242722Statistical tests under Dallal's model: Asymptotic and exact methods.Zhiming LiChangxing MaMingyao AiThis paper proposes asymptotic and exact methods for testing the equality of correlations for multiple bilateral data under Dallal's model. Three asymptotic test statistics are derived for large samples. Since they are not applicable to small data, several conditional and unconditional exact methods are proposed based on these three statistics. Numerical studies are conducted to compare all these methods with regard to type I error rates (TIEs) and powers. The results show that the asymptotic score test is the most robust, and two exact tests have satisfactory TIEs and powers. Some real examples are provided to illustrate the effectiveness of these tests.https://doi.org/10.1371/journal.pone.0242722
spellingShingle Zhiming Li
Changxing Ma
Mingyao Ai
Statistical tests under Dallal's model: Asymptotic and exact methods.
PLoS ONE
title Statistical tests under Dallal's model: Asymptotic and exact methods.
title_full Statistical tests under Dallal's model: Asymptotic and exact methods.
title_fullStr Statistical tests under Dallal's model: Asymptotic and exact methods.
title_full_unstemmed Statistical tests under Dallal's model: Asymptotic and exact methods.
title_short Statistical tests under Dallal's model: Asymptotic and exact methods.
title_sort statistical tests under dallal s model asymptotic and exact methods
url https://doi.org/10.1371/journal.pone.0242722
work_keys_str_mv AT zhimingli statisticaltestsunderdallalsmodelasymptoticandexactmethods
AT changxingma statisticaltestsunderdallalsmodelasymptoticandexactmethods
AT mingyaoai statisticaltestsunderdallalsmodelasymptoticandexactmethods