Shiny Tool for Sample Size Calculation R package samplex version 0.3.0 An interactive 'shiny' application to assist in determining sample sizes for common survey designs such as 'simple random sampling', 'stratified sampling', and 'cluster sampling'. It includes formulas, helper calculators, and illustrative examples. Software Depends: R (>= 3.5) Imports: shiny Suggests: knitr, rmarkdown, DT, dplyr Gustavo Ramirez-Valverde <gramirez@colpos.mx> Comprehensive R Archive Network (CRAN) Gustavo Ramirez-Valverde [aut, cre], Benito Ramirez-Valverde [aut] MIT + file LICENSE (https://CRAN.R-project.org/package=samplex/LICENSE) 2025-10-29 application/tgz https://CRAN.R-project.org/package=samplex doi:10.32614/CRAN.package.samplex en