In this paper, we present the doex package contains the tests for equality of normal dis tributed and independent group means under unequal variances such as Cochran F, Welch-Aspin, Welch, Box, Scott-Smith, Brown-Forsythe, Johansen F, Approximate F, Alexander-Govern, Generalized F, Modified Brown-Forsythe, Permutation F, Adjusted Welch, B2, Parametric Bootstrap, Fiducial Approach, and Alvandi Generalized F-test. Most of these tests are not available in any package. Thus, doex is easy to use for researchers in multidisciplinary studies. In this study, an extensive Monte-Carlo simulation study is conducted to investigate the performance of the the tests for equality of normal distributed group means under unequal variances in terms of Type I error probability and penalized power. In the case of Type I error probability of the compared tests are different, the penalized power is used which allows fair power comparisons. In this way, we conclude the performance of the tests by taking into account two possible errors in hypothesis testing.
Supplementary materials are available in addition to this article. It can be downloaded at RJ-2021-008.zip
doex, asbio, coin, lawstat, onewaytests, welchADF, WRS2, car, rstatix, inferr
Survival, ClinicalTrials, Econometrics, Finance, Multivariate, Robust, SocialSciences, TeachingStatistics
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For attribution, please cite this work as
Cavus & Yazıcı, "The R Journal: Testing the equality of normal distributed and independent groups' means under unequal variances by doex package", The R Journal, 2021
BibTeX citation
@article{RJ-2021-008,
author = {Cavus, Mustafa and Yazıcı, Berna},
title = {The R Journal: Testing the equality of normal distributed and independent groups' means under unequal variances by doex package},
journal = {The R Journal},
year = {2021},
note = {https://doi.org/10.32614/RJ-2021-008},
doi = {10.32614/RJ-2021-008},
volume = {12},
issue = {2},
issn = {2073-4859},
pages = {134-154}
}