The hardware and bandwidth for this mirror is donated by dogado GmbH, the Webhosting and Full Service-Cloud Provider. Check out our Wordpress Tutorial.
If you wish to report a bug, or if you are interested in having us mirror your free-software or open-source project, please feel free to contact us at mirror[@]dogado.de.

What’s new in chisquare version 1.2

Statistical methodology improvements

• Exact p-value calculation for permutation and Monte Carlo tests: Implemented the Phipson & Smyth (2010) method for computing exact p-values when permutations are randomly drawn. The formula p = (B + 1)/(m + 1) ensures that p-values are never zero and that Type I error rates are correctly controlled. This supersedes the previous implementation that could underestimate p-values and inflate Type I error rates;

New association measures and effect sizes

• Maximum-corrected version of the C coefficient added;
• 95 percent confidence interval around Goodman-Kruskal lambda (asymmetric and symmetric) added;
• 95 percent confidence interval around Goodman-Kruskal tau added;
• Enhanced effect size interpretation for chi-square-based measures: uncorrected measures (Phi, C, Cramer’s V) are now assessed against Cohen’s thresholds adjusted by their maximum achievable values, while corrected measures use standard Cohen’s thresholds;
• Added a detailed effect size interpretation thresholds table showing exact threshold values for all association measures;

New residual analysis methods

• Goodman-Kruskal residuals added;
• PEM (Percentage of Maximum Deviation from Independence) added;
• Standardised median polish residuals and adjusted standardised median polish residuals added, providing robust alternatives for cell residual analysis that are resistant to masking and swamping effects from outliers;

User interface and output improvements

• Added a new gt.tables component to the returned results that contains all formatted gt tables; this allows the tables to be rendered any time without needing to re-run the analysis;
• Modification to the code to avoid automatic rendering of all tables in the R console, improving execution speed and preventing browser overload; tables are now returned in a structured list (see previous bullet point) but only rendered when setting the new render.all.tables parameter to TRUE;

Documentation improvements

• Major restructuring of the help documentation for improved clarity and pedagogical flow: content is now organised into six thematic sections (Hypothesis Testing and Power Analysis; Decomposition of the Chi-Square Statistic; Table Standardisation; Chi-Square-Maximising Table; Post-Hoc Analysis; Measures of Categorical Association);
• Table standardisation methodology (Iterative Proportional Fitting) now documented separately from specific coefficient applications, enhancing conceptual clarity;
• Association measures reorganised by statistical foundation: Chi-square-based measures, Margin-free measures, and PRE (Proportional Reduction in Error) measures, facilitating coefficient selection based on analytical needs;

Bug fixes and minor improvements

• Annotation at the bottom of the last rendered table removed since no longer relevant;
• Typo in the title of the absolute contribution to the chi-square statistic table fixed;
• Updates to the help documentation’s content and layout;
• Bibliographical references updated.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
Health stats visible at Monitor.