Changes in version 0.5.0 - Added new function chi.test() to perform hypothesis testing and confidence intervals for a single population variance using the Chi-squared distribution. Supports raw data vectors (x) or sample summary statistics (s2, n). Changes in version 0.4.2 - Updated z_score() with default NULL parameters, improved error handling, and listing available columns when col is missing or invalid. - Updated z_score() console output formatting to display $\pm 2\sigma$ and $\pm 3\sigma$ using unicode escape characters. - Added @keywords internal to individual datasets in R/datasets_estb.R and R/datasets_estex.R to keep R-Universe web reference index clean while maintaining full help support (?dataset) in RStudio. Changes in version 0.4.1 - Added _pkgdown.yml configuration to organize and categorize package documentation reference sections on R-Universe. Changes in version 0.4.0 - Added new function z_score() to compute standardized z-scores and report counts of mild ($\pm 2\sigma$) and severe ($\pm 3\sigma$) outliers. - Updated vallas_outliers() to report counts of mild and severe outliers when a dataset is provided. - Cleaned up unused local variables in vallas_outliers(). Changes in version 0.3.3 - Converted code string literals to unicode escape sequences to eliminate R CMD check non-ASCII warnings. - Added .n_cell and .target_media to global variables list in R/globals.R and formatted example line lengths to achieve 100% OK status in R CMD check. Changes in version 0.3.2 - Added NeedsCompilation: no to DESCRIPTION so that installation from source on Windows does not require Rtools. Changes in version 0.3.1 - Added detailed print output for er_bloqueo() displaying Mean Squares (CM) used and the correction factor. - Added automatic alerts in er_bloqueo() console outputs evaluating and concluding the experiment's precision. Changes in version 0.3.0 - Implemented er_bloqueo() to calculate relative blocking efficiency for "DCAvsDBCA" (DCA vs DBCA) and "DBCAvsDCL" (DBCA vs DCL). - Added comparacion parameter to er_bloqueo() to choose between DCA vs DBCA and DBCA vs DCL comparison modes. - Formatted output to display rounded values (2 decimal places) using cli in console, while returning the numeric value invisibly. - Added package documentation and examples. Changes in version 0.2.8 - Added roxygen2 documentation for 14 experimental statistics datasets: almacenamiento_carne, cangrejo_ermitanio, competencia, fert_trigo_bajo_riego, densidad_trigo_riego_suelo, corderos_des, citricos, lodos, cebada_salinidad, camarones, cemento, forestal_alt, cesped_compactacion, and cesped_golf. - Updated R/documentation_groups.R to register these datasets under the datasets_estex group in alphabetical order. - Updated pending/PENDING_EST2_DATASETS.md checklist of pending datasets. Changes in version 0.2.7 - Added a numerical tolerance parameter tol to verificar_ortogonalidad() to prevent floating-point comparison errors with non-integer contrast matrices. - Added support for one-proportion Z-test in z.test() when p1 and n1 are specified and p2/n2 are omitted. - Updated package documentation and examples for z.test(). Changes in version 0.2.6 - Reverted column name accent removals across pesada_novillos (Días, Días_total), especies (Número), arroz_pd (Repetición), and cana_pd (Método) to preserve compatibility with scripts/exercises that import raw .xlsx files directly. - Updated package documentation and re-generated internal .rda dataset files to match the reverted column names. Changes in version 0.2.5 - Added roxygen2 documentation for 55 basic statistics datasets (including molinos, alimento, maiz, corderos, sorgo, ovejas, balanceado_cerdos, pezoneras, establecimientos, neumaticos_tractores, glifosato, barrenador, penetrometro, TRC, concentracion_insecticida, neumaticos, peso_balanceado, raciones, cerdos, ganancia_novillos, N_suelo, efectividad_sembradora, lesiones_hojas, dieta_bufalos, colesterol, MS_girasol, dietas_pollos, germinacion, algodon, educacion, semilla, albumen, insectos, monedas, capturados, susceptibilidad, actividad, razas, semillas, arvejas, agua_forrajera, area_trigo, coleoptero, P_maiz, lluvia_forraje, hileras_maiz, calificaciones, semilla_trigo, huevos, pollos, fungicida, proteina_caseina, and dosis_tomate). - Updated R/documentation_groups.R to register all 67 basic statistics datasets under the datasets_estb group in alphabetical order. - Cleaned column names across several datasets to remove written accents/tildes while preserving original capitalization (Días and Días_total to Dias and Dias_total in pesada_novillos; Número to Numero in especies; Repetición to Repeticion in arroz_pd; Método to Metodo in cana_pd). - Re-generated internal .rda dataset files and updated package documentation via devtools::document(). Changes in version 0.2.4 - Added new function forzar_efecto(): Manipulates ANOVA effect significance. - Added new function ajustar_variables(): Adjusts distribution properties (mean, sd, shape, outliers). - Improved forzar_efecto() logic: significativo = FALSE now generates realistic non-significant p-values using inverse magnitude scaling. - Updated ajustar_variables(): - Added support for list() inputs in grouped dataframes to handle explicit NULL values per group. - Added mantener_originales argument to preserve original statistics when parameters are unspecified. - Added validation to ensure sample size ($N > 1$) to prevent calculation errors. - Renamed forzar_efecto() to ajustar_significancia(): - Renamed parameter significativo to sig and made it mandatory. - Added support for RCBD designs (cells with N=1) by injecting residual noise. - Implemented early exit if the desired significance state is already met. - Updated documentation: Recommended pak::pkg_install() for installation instead of devtools::install_github() to align with modern R standards and avoid deprecation warnings. Changes in version 0.2.3 - Refactored vallas_outliers: removed plotting logic and updated return type (now data.frame). - Added geom_vallas(): a new ggplot2 geometry to plot outlier fences. - geom_vallas() supports direct color customization (color_interna, color_externa), line width (linewidth), and label size (size_texto). - geom_vallas() includes a mostrar_vallas parameter to filter internal/external fences. - Internal implementation uses multiple layers to allow independent styling and facet support. - Integrated cli package for improved console output in vallas_outliers, verificar_ortogonalidad, install.local_repo, and mkminiCRAN. Changes in version 0.2.2 - Added new function: verificar_ortogonalidad for checking orthogonality of contrast matrices. - Added examples to z.test documentation. - Added new datasets. - Added new datasets: productores. - Fixed import issue in superficies_EAP dataset where some records were missing. - Corrected data types for date and time columns in pesada_novillos dataset. - Improved vallas_outliers to explicitly unname quantile inputs, preventing issues with named vectors. - Changed vallas_outliers return type to a data.frame to support $ operator access. - Documentation updates and minor fixes. Changes in version 0.2.1 - Added new function: vallas_outliers (and internal helper z_values). - Comprehensive documentation fixes and improvements across all datasets. - Fixed non-ASCII character encoding issues. - Internal improvements: Added globals.R and fixed namespace imports.