R-bloggers

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Hello, I’d like to share CougarStats, a free and open-source R Shiny web app I developed to support the teaching and learning of Statistics. CougarStats runs entirely in a browser and is designed for accessibility and ease of use. You can explore the app here: https://www.cougarstats.ca/    ... [Read more...]

Introduction Universities are increasingly using collaborative learning pedagogies, which can benefit learners through deeper understanding of course content and teamwork skills. However, the realisation of these sought-after benefits depend on how educators assign learners to groups. Educators have formulated various mathematical models to perform this assignment. Some have developed developed ... [Read more...]

Understanding R’s describe() Function: A Complete Guide to Summary Statistics Table of Contents Introduction to describe() Breaking Down the Output Columns Key Statistics and Their Interpretation Practical Examples When to Use Which Statistic Extending the Functionality Conclusion Introduction to describe() The describe() function from R’s psych package (Revelle, 2023) ... [Read more...]

The Data Analyst’s Guide to  Statistical Coefficients Table of Contents What Are Coefficients? Regression Coefficient Coefficient of Determination (R²) Coefficient of Variation (CV) Correlation Coefficient Other Common Coefficients Implementation in R Key Takeaways What Are Coefficients? In statistics and data analysis, coefficients are numerical measures that quantify relationships between ... [Read more...]

Summer School in Science Mapping (SSSM) 2025 – I International Edition Title: Producing Systematic Literature Reviews with Bibliometrix R and Biblioshiny Date & Location: June 9-13, 2025 – Naples, ITA We are pleased to announce the upcoming Summer School in Science Mapping (SSSM) 2025 – I International Edition, an intensive training program focused on conducting … Continue reading ... [Read more...]

For anyone interested, “Programming in R” (title translated) is a free book on R programming written in Greek. It presents a programmer’s point of view of R, for beginners (in fact for people with absolutely no programming experience) to advanced programmers.  Thus, the book does not delve deeply on ... [Read more...]

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On May 11th 2026, Professor Frank Harrell with lead a workshop, Introduction to R, Regression, and the rms Package, covering foundational R and RStudio skills, linear and multiple regression concepts, and an introduction to the rms package for model fitting and diagnostics. It also introduces a reproducible workflow using Quarto, with ... [Read more...]

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{talib} is a new R package built on TA-Lib, which is now available on CRAN. The R-package is targeted at individuals and, perhaps, institutions who, in some form or the other, interacts with the financial markets using technical analysis. The library is built with minimal dependencies for long-term stability and ... [Read more...]

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Zhenguo Zhang's Blog https://fortune9.netlify.app/2026/04/26/single-vs-double-quotes-in-command-line-and-r/ -When feeding a program with command line arguments, single quotes and double quotes make a significant difference. The Shell Rule Single quotes (') do not allow escaping any characters; the contents are treated literally. Double quotes ("), however, allow for character escaping and ... [Read more...]

Zhenguo Zhang's Blog /2026/04/26/single-vs-double-quotes-in-command-line-and-r/ -When feeding a program with command line arguments, single quotes and double quotes make a significant difference. The Shell Rule Single quotes (') do not allow escaping any characters; the contents are treated literally. Double quotes ("), however, allow for character escaping and variable expansion. You can ... [Read more...]

Pie charts are bad, as any fule kno. We’re not as good at judging relative differences between angles and areas as we are at judging relative differences in lengths on a common baseline. This is especially true when we have more than two things to compare at the same ... [Read more...]

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