The Two Parameter Exponential Distribution R package twopexp version 1.0.0 Density, distribution function, quantile function, and random generation function, maximum likelihood estimation (MLE), penalized maximum likelihood estimation (PMLE), the quartiles method estimation (QM), and median rank estimation (MEDRANK) for the two-parameter exponential distribution. MLE and PMLE are based on Mengjie Zheng (2013)<https://scse.d.umn.edu/sites/scse.d.umn.edu/files/mengjie-thesis_masters-1.pdf>. QM is based on Entisar Elgmati and Nadia Gregni (2016)<doi:10.5539/ijsp.v5n5p12>. MEDRANK is based on Matthew Reid (2022)<doi:10.5281/ZENODO.3938000>. In addition, the functions for computing the Kolmogorov-Smirnov (D) statistic, the Cramér-von Mises statistic, and the Anderson–Darling statistic are provided. Software Depends: R (>= 2.10) Imports: graphics, stats Suggests: testthat (>= 3.0.0) Atchanut Rattanalertnusorn <atchanut_r@rmutt.ac.th> Comprehensive R Archive Network (CRAN) Atchanut Rattanalertnusorn [aut, cre] GPL-3 2026-07-17 application/tgz https://CRAN.R-project.org/package=twopexp doi:10.32614/CRAN.package.twopexp en-US