Next week!

In "Uncertainty in Bayesian leave-one-out cross-validation based model comparison" doi.org/10.1214/25-B... we showed when LOO-CV elpd_diff and se_diff normal approximation uncertainty quantification in model comparison is well calibrated. We have now merged a related PR to loo R package 1/

Long tables that wont fit on a page? In tinytable by @vincentab.bsky.social you can rotate tables with theme_rotate(). Game changer!

We have a new version of this paper out. The headline results are the same—political science must filter results heavily for statistical significance—but we've added many extensions and rewritten much of it in response to feedback (thank you!). A quick thread on updates 👇

Super excited to get this at my door today! Ursula Laa and my book on exploring high-d data and models is in print! Book website is www.routledge.com/Interactivel... if interested I think my 30% discount code might work for you - msg me. Time to update dicook.github.io/mulgar_book/ too! #rstats

The newest release of Posit Assistant, an agent for coding and data analysis, includes a "data cleaning mode." When enabled, the agent will run quality checks and surface decisions about e.g. import issues, factor levels, etc to the user. In the AI Newsletter: opensource.posit.co/blog/2026-05...

It is **extremely** cool to see {marginaleffects} for #RStats used in fields I know nothing about. Here's a fun analysis of how often people use “um” and “uh” in speech.

It has arrived @vincentab.bsky.social Perfect sabbatical reading for next semester and will have to think about how I will weave marginaleffects, emmeans, and @easystats.github.io together for teaching next year...

🎂 Happy 50th Birthday S (and #rstats)!

Do you know a good framework to document data analysis choices? Ex: dropping obs, recoding a var, tuning pars, model + test statistics, etc. Ideally human-readable so people don't have to read my entire codebase. Low-maintenance+ machine-readable for bonus points! #RStats #PyData

R version 4.6.0 "Because it was There" (source version) has been released. It should be on CRAN by now. #rstats The choice of codename is in remembrance of R Core member Tomàš Kalibera (1978-2026). Among many other things, he was a keen mountain climber.

I'm really excited to teach this workshop again in May. The best part is always interacting with smart, engaged participants, and I'd love to have you on board! Let me know if you're curious and have any questions.

It's out, everyone. It's out! Julia is one of the most brilliant translational methodologists I know, and it was a real honor to work with her on this paper. Please let us know if you have any questions or feedback! (BTW, I'm a psychologist now?)

🚨 #RStats and #PyData devs! I'm looking for β testers for this thing I just built: A unified dashboard + orchestrator for code and data quality checks. It has lots of neat features and I'm super eager for feedback and bug reports. Check out the video demo: vincentarelbundock.github.io/scrutin/

The great @eddelbuettel.com invited me to his STAT447 class at the University of Illinois. If you'd like to hear me speak about the interpretation of statistical models in #RStats, using the {marginaleffects} 📦, check out the video! www.youtube.com/watch?v=v3TX...

April 2026 will bring a new #Ubuntu 26.04, a new #Rstats release 4.6.0 and a new #BioConductor 3.23. And ... as the "future is unevenly distributed" we already have #r2u running 26.04. See 'zero to tidyverse': 10 sec, 107 files, 1 command. #r2u. Fast. East. Reliable. Pick All Three.

This looks like a great resource!

🧵1/ Our first meta-science paper (with 350+ coauthors) is published today in Nature. It presents one of the largest-ever reproducibility projects in economics & political science. Here’s what we found 👇

#rstats I'm glad to announce Jarl 0.5.0! Jarl is a very fast R linter, written in Rust. This release brings many improvements and fixes. See the blog post: www.etiennebacher.com/posts/2026-0... And the full changelog: jarl.etiennebacher.com/changelog 🧵 to highlight some features below (1/4)

I've been working on something fun! When you process #QuartoPub notebooks at sub-millisecond speed, you get *instant* previews as you type, and you can render massive websites in mere seconds. 🤯🚀 #Quarto #RStats

Statistical Rethinking 2026 is done: 20 new lectures emphasizing logical and critical statistical workflow, from basics of probability theory to causal inference to reliable computation to sensitivity. It's all free, made just for you. Lecture list and links: github.com/rmcelreath/s...

How much does it pay to publish an open access academic book? Read this thread for my story and 💲💰 amounts. 🧵 www.routledge.com/9781032908724

I have been using the book in my data analytics class since 2021 and it is great. I am particularly excited about the fact that the new version is using the `marginaleffects` package for the Working with models chapter

1/ Sorry for double-posting from X. Sharing a new working paper for the Year of the Horce 🐎: "An AI-assisted workflow that scales reproducibility in empirical research" (bit.ly/repro-ai) w/ Leo Yang Yang

I wrote a #RStats wrapper around the Hydra config management system. It's a super powerful and convenient tool to organize and use configs like keys, tuning parameters, paths, etc. I'd love it if you could tell me what works well and what doesn't. Thanks! vincentarelbundock.github.io/hydraR

Noah is an *excellent* R package developer. This looks very interesting.

This is the most current one! I'm on team {tinytable} for pretty much everything nowadays

You can now use LLMs to learn about any chapter of my 𝑀𝑜𝑑𝑒𝑙 𝑡𝑜 𝑀𝑒𝑎𝑛𝑖𝑛𝑔 book, or any function in the `marginaleffects` package for R or Python. Check out the cool demo video below (sound on). Install here: github.com/vincentarelb... #marginaleffects #RStats #pydata

"Model to Meaning" just received a super generous review in JASA. Check it out! (I'm blushing 😊) Reminder: You can get the paper copy from CRC, and the full **free** version will remain online forever at marginaleffects.com www.tandfonline.com/doi/full/10....

We actually show in the model that because our best estimates of statistical power are fairly low, even if literally 100% of our hypotheses are in fact correct we still must have extreme selection against nulls

Check out the new paper! And please please please send us both gut reactions and harsh criticism.

New preprint! So, what's a multiverse analysis good for anyway?> With @jessicahullman.bsky.social and @statmodeling.bsky.social juliarohrer.com/wp-content/u...

🚨 GAMs have moved on—so it’s time for an update. On March 3, 2026 (17:00–19:00 CET) I’ll be livestreaming an updated introduction to Generalized Additive Models in R 📺 YouTube livestream link: youtube.com/live/A9U8e1K... #RStats #mgcv #GAMs #gratia #statistics 🧪

One of the most important statistical packages made in Econ in the last decade

Things are grim. But in more frivolous news... @jamesbrandecon.bsky.social and I have been chipping away at `dbreg`, a 📦 for running big regression models on database backends. For the right kinds of problems, the speed-ups are near magical. Website: grantmcdermott.com/dbreg/ #rstats [1/2]

Finished teaching my new Advance Stats for Psych graduate course today with a heavy emphasis on both DAGs and shifting away from coefficient interpretation and towards models as prediction machines. Both went great! The latter was extremely helpful for logistic regression (for obvious reasons 😵‍💫)!

My poster got allocated prime real estate at the conference: High traffic, captive audience.

There is a new-ish Python package, moderndid, that implements almost all of the "modern" DiD estimators: github.com/jordandekler...

Look under your tree! 🌲 🎁 There's a major #rstats #rdatatable release waiting! A tremendous thanks to all involved and especially those contributing to some major (performance-maintaining!!) rewrites around the non-API issue. cran.r-project.org/web/packages...

We're doing the final sprint, and I think we're able to send the PDF of the forthcoming Bayesian Workflow book to the publisher in the next two weeks (500+ pages), which would mean it would be published some time next year

Big new blogpost! My guide to data visualization, which includes a very long table of contents, tons of charts, and more. --> Why data visualization matters and how to make charts more effective, clear, transparent, and sometimes, beautiful. www.scientificdiscovery.dev/p/salonis-gu...

Any good ressource for LEARNING PROGRAMMING for students who know NOTHING about programming (really nothing)? It would be great in R/python (final obj. is data analysis). Any help appreciated! Thanks! @andrew.heiss.phd @gmcd.bsky.social @kylefbutts.bsky.social @vincentab.bsky.social

It's happening! Canada launched two programs to recruit international researchers. Canada Impact+ Research Chairs (1 million/yr for 8 yrs +) Canada Impact+ Emerging Leaders. I will do my best to facilitate the process for those interested. Hit me up. www.canada.ca/en/impact-pl...

sorry I'm late! I have at last broken my silence on Pantone's Color of the Year johnpaulbrammer.substack.com/p/cloud-danc...

#rstats It is with profound sadness I heard that my long-time friend and colleague, John Fox passed away this week. He was the author of {car}, {effects}, {Rcmdr}, ... and numerous influential books. I will miss him greatly. www.john-fox.ca

One of the things that has been on my to do list for a very long time, is building a gallery of all of the charts I've made across #TidyTuesday, #30DayChartChallenge, #30DayMapChallenge, and other miscellaneous projects 📊 And it's finally here! Link: nrennie.rbind.io/viz-gallery/ #DataViz #RStats

Coding tip of the day: make sure you leave informative comments in your code

#rstats Please welcome Jarl, a new R linter. Jarl is a CLI tool with extensions in VS Code, Positron, and Zed. It can check thousands of lines of R code in milliseconds. Jarl provides several output formats, a Github Actions workflow, and more. Blog post: www.etiennebacher.com/posts/2025-1...