Alex Franks
amfranks.bsky.social
Alex Franks
@amfranks.bsky.social
Associate Professor of Statistics
afranks.com
This kinda thing drives me crazy! But what causes it? Is it the result of learning different mass matricws for each chain during warmup?
November 21, 2025 at 12:03 AM
I'm not sure how much value there is reasoning about the marginal distribution of effect sizes over all conducted experiments, but if you do, I think it's kind of reasonable to think that most real world effects are small and yield something a priori kinda Gaussian (but maybe heavy tailed).
November 15, 2025 at 5:22 PM
Yeah-- I'm not a fan of NHST, in particular because I don't really believe there are "true nulls". I'm just trying to articulate how I think people think about the two groups model (null/alt). I prefer Bayesianism, where I do think you should think about prior distributions over effect sizes.
November 15, 2025 at 5:19 PM
Ignoring publication selection effects, Z-scores under the null are standard normal and under the alternative "something else". How non-normal the marginal z-scores look depends on the mixture weights (the proportion of randomized experiments that are null) and how non-normal the alts look.
November 15, 2025 at 5:12 PM
I find his lecture on storytelling particularly awesome: clauswilke.com/lectures/sli...
Lectures – Effective Visual Communication
clauswilke.com
November 4, 2025 at 2:10 AM
Goes beyond just graphic design but @clauswilke.com has some great tips for visualizations and presentations, e.g. wilkelab.org/dataviz_shor...
Principles of Figure Design
wilkelab.org
November 4, 2025 at 2:06 AM
I've been thinking about developing this course for a little while, and the @chelseaparlett.bsky.social post and reaction may be the tipping point for me to finally take it on: bsky.app/profile/chel...
Data Science programs often put too little emphasis on causal inference, and it’s hurting their graduates on the job market! The econometrics people are coming for your jobs lol
October 9, 2025 at 5:50 PM
Not saying that I totally buy it, but this post outlines an interesting justification based on modeling the half life of a "fatal mistake" using tools from survival analysis: www.tobyord.com/writing/half...
Is there a Half-Life for the Success Rates of AI Agents? — Toby Ord
Building on the recent empirical work of Kwa et al. (2025), I show that within their suite of research-engineering tasks the performance of AI agents on longer-duration tasks can be explained by an ex...
www.tobyord.com
August 7, 2025 at 9:13 PM
Meant to say AOS.
July 19, 2025 at 6:03 PM
I do think that stats depts should be doing much more to emphasize data analysis. One of the best ways to generate idea for stats methods research is to be intimately familiar with data analysis and the challenges that come with it.
July 19, 2025 at 3:54 PM
In general, I think nowadays most departments would be equally happy with an applied statistician publishing in AOAS, JASA A&CS and JCGS as they would publishing in AOS.
July 19, 2025 at 3:46 PM
What is most valued at tenure time also depends on what kind of department. E.g. as you allude to, a biostat dept will have very different criteria than a stats dept in say, a business school, which definitely skews more toward AOAS style publications.
July 19, 2025 at 3:46 PM
I like to think of academic statistics on a continuum: applied, methods and then theory. In my opinion, a "strong" stats dept should have faculty at a range of points on this continuum.
July 19, 2025 at 3:43 PM