Beta Regression R package betareg version 3.2-5 CRAN Task View: Econometrics (https://CRAN.R-project.org/view=Econometrics) CRAN Task View: Psychometrics (https://CRAN.R-project.org/view=Psychometrics) Beta regression for modeling beta-distributed dependent variables on the open unit interval (0, 1), e.g., rates and proportions, see Cribari-Neto and Zeileis (2010) <doi:10.18637/jss.v034.i02>. Moreover, extended-support beta regression models can accommodate dependent variables with boundary observations at 0 and/or 1, see Kosmidis and Zeileis (2025) <doi:10.1093/jrsssc/qlaf039>. For the classical beta regression model, alternative specifications are provided: Bias-corrected and bias-reduced estimation, finite mixture models, and recursive partitioning for beta regression, see Grün, Kosmidis, and Zeileis (2012) <doi:10.18637/jss.v048.i11>. Software Depends: R (>= 3.6.0) Imports: graphics, grDevices, methods, stats, flexmix, Formula, lmtest, modeltools, sandwich Suggests: bamlss, car, distributions3 (>= 0.2.1), knitr, lattice, numDeriv, partykit, quarto, statmod, strucchange Achim Zeileis <Achim.Zeileis@R-project.org> Comprehensive R Archive Network (CRAN) Achim Zeileis [aut, cre] (ORCID: <https://orcid.org/0000-0003-0918-3766>), Francisco Cribari-Neto [aut] (ORCID: <https://orcid.org/0000-0002-5909-6698>), Bettina Grün [aut] (ORCID: <https://orcid.org/0000-0001-7265-4773>), Ioannis Kosmidis [aut] (ORCID: <https://orcid.org/0000-0003-1556-0302>), Alexandre B. Simas [ctb] (earlier version by), Andrea V. Rocha [ctb] (earlier version by) GPL-2 GPL-3 2026-07-12 application/tgz https://CRAN.R-project.org/package=betareg doi:10.32614/CRAN.package.betareg