onewaytests: An R Package for One-Way Tests in Independent Groups Designs

One-way tests in independent groups designs are the most commonly utilized statistical methods with applications on the experiments in medical sciences, pharmaceutical research, agri culture, biology, engineering, social sciences and so on. In this paper, we present the onewaytests package to investigate treatment effects on the dependent variable. The package offers the one-way tests in independent groups designs, which include ANOVA, Welch’s heteroscedastic F test, Welch’s heteroscedastic F test with trimmed means and Winsorized variances, Brown-Forsythe test, Alexander Govern test, James second order test and Kruskal-Wallis test. The package also provides pairwise comparisons, graphical approaches, and assesses variance homogeneity and normality of data in each group via tests and plots. A simulation study is also conducted to give recommendations for applied researchers on the selection of appropriate one-way tests under assumption violations. Furthermore, especially for non-R users, a user-friendly web application of the package is provided. This application is available at http://www.softmed.hacettepe.edu.tr/onewaytests.

Osman Dag , Anil Dolgun , Naime Meric Konar
2018-05-21

Supplementary materials

Supplementary materials are available in addition to this article. It can be downloaded at RJ-2018-022.zip

CRAN packages used

onewaytests, onewaytests, stats

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Citation

For attribution, please cite this work as

Dag, et al., "onewaytests: An R Package for One-Way Tests in Independent Groups Designs", The R Journal, 2018

BibTeX citation

@article{RJ-2018-022,
  author = {Dag, Osman and Dolgun, Anil and Konar, Naime Meric},
  title = {onewaytests: An R Package for One-Way Tests in Independent Groups Designs},
  journal = {The R Journal},
  year = {2018},
  note = {https://doi.org/10.32614/RJ-2018-022},
  doi = {10.32614/RJ-2018-022},
  volume = {10},
  issue = {1},
  issn = {2073-4859},
  pages = {175-199}
}