Goodness-of-Fit Test for Weibull Distribution (Weibullness) R package weibullness version 1.24.1 Conducts a goodness-of-fit test for the Weibull distribution (referred to as the weibullness test) and furnishes parameter estimations for both the two-parameter and three-parameter Weibull distributions. Notably, the threshold parameter is derived through correlation from the Weibull plot. Additionally, this package conducts goodness-of-fit assessments for the exponential, Gumbel, and inverse Weibull distributions, accompanied by parameter estimations. For more details, see Park (2017) <doi:10.23055/ijietap.2017.24.4.2848>, Park (2018) <doi:10.1155/2018/6056975>, and Park (2023) <doi:10.3390/math11143156>. This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Korea government (MSIT) (No. 2022R1A2C1091319, RS-2023-00242528). Software Depends: R (>= 4.0), graphics, stats Imports: methods Suggests: bsgof Chanseok Park <statpnu@gmail.com> Comprehensive R Archive Network (CRAN) Chanseok Park [aut, cre] (ORCID: <https://orcid.org/0000-0002-2208-3498>) GPL-2 GPL-3 2024-01-09 application/tgz https://CRAN.R-project.org/package=weibullness doi:10.32614/CRAN.package.weibullness