SAE using HB Twofold Subarea Model under Beta Distribution R package saeHB.TF.beta version 0.2.0 Estimates area and subarea level proportions using the Small Area Estimation (SAE) Twofold Subarea Model with a hierarchical Bayesian (HB) approach under Beta distribution. A number of simulated datasets generated for illustration purposes are also included. The 'rstan' package is employed to estimate parameters via the Hamiltonian Monte Carlo and No U-Turn Sampler algorithm. The model-based estimators include the HB mean, the variation of the mean, and quantiles. For references, see Rao and Molina (2015) <doi:10.1002/9781118735855>, Torabi and Rao (2014) <doi:10.1016/j.jmva.2014.02.001>, Leyla Mohadjer et al.(2007) <http://www.asasrms.org/Proceedings/y2007/Files/JSM2007-000559.pdf>, Erciulescu et al.(2019) <doi:10.1111/rssa.12390>, and Yudasena (2024). Software Depends: R (>= 3.5) Imports: methods, Rcpp (>= 0.12.0), RcppParallel (>= 5.0.1), rstan (>= 2.18.1), rstantools (>= 2.4.0), bayesplot, stringr LinkingTo: BH (>= 1.66.0), Rcpp (>= 0.12.0), RcppEigen (>= 0.3.3.3.0), RcppParallel (>= 5.0.1), rstan (>= 2.18.1), StanHeaders (>= 2.18.0) Suggests: knitr, rmarkdown, testthat (>= 3.0.0), ggplot2 Nasya Zahira Putri <nasyazp28@gmail.com> Comprehensive R Archive Network (CRAN) Nasya Zahira Putri [aut, cre], Cucu Sumarni [aut], Rizal Fauziarochman Yudasena [aut] GPL (>= 3) 2025-09-03 application/tgz https://CRAN.R-project.org/package=saeHB.TF.beta doi:10.32614/CRAN.package.saeHB.TF.beta