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Andrew Gelman et al. Profile
Andrew Gelman et al.

@StatModeling

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@StatModeling
Andrew Gelman et al.
6 years
You need 16 times the sample size to estimate an interaction than to estimate a main effect
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@StatModeling
Andrew Gelman et al.
4 years
BDA FREE (Bayesian Data Analysis now available online as pdf)
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@StatModeling
Andrew Gelman et al.
6 months
“You need 16 times the sample size to estimate an interaction than to estimate a main effect,” explained
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@StatModeling
Andrew Gelman et al.
4 years
Concerns with that Stanford study of coronavirus prevalence
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@StatModeling
Andrew Gelman et al.
3 years
“Dream Investigation Results: Official Report by the Minecraft Speedrunning Team”
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@StatModeling
Andrew Gelman et al.
4 years
Post Edited: Coronavirus age-specific fatality ratio, estimated using Stan, and (attempting) to account for underreporting of cases and the time delay to death. Now with data and code.
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@StatModeling
Andrew Gelman et al.
3 years
Coronavirus and Simpson’s paradox: Oldsters are more likely to be vaccinated and more likely to have severe infections, so you need to adjust for age when comparing vaccinated and unvaccinated people
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@StatModeling
Andrew Gelman et al.
3 months
It’s bezzle time: The Dean of Engineering at the University of Nevada gets paid $372,127 a year and wrote a paper that’s so bad, you can’t believe it.
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@StatModeling
Andrew Gelman et al.
3 years
Thinking fast, slow, and not at all: System 3 jumps the shark
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@StatModeling
Andrew Gelman et al.
4 years
Reverse-engineering the problematic tail behavior of the Fivethirtyeight presidential election forecast
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@StatModeling
Andrew Gelman et al.
5 years
When doing regression (or matching, or weighting, or whatever), don’t say “control for,” say “adjust for”
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@StatModeling
Andrew Gelman et al.
5 years
Coursera course on causal inference from Michael Sobel at Columbia
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@StatModeling
Andrew Gelman et al.
6 years
Stupid-ass statisticians don’t know what a goddam confidence interval is
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@StatModeling
Andrew Gelman et al.
5 years
What is probability?
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@StatModeling
Andrew Gelman et al.
2 years
“The Hitchhiker’s Guide to Responsible Machine Learning” and “Statistical Analysis Illustrated”
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@StatModeling
Andrew Gelman et al.
5 years
Statistical-significance thinking is not just a bad way to publish, it’s also a bad way to think
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@StatModeling
Andrew Gelman et al.
5 years
“The Book of Why” by Pearl and Mackenzie
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@StatModeling
Andrew Gelman et al.
3 years
John Cook: “Students are disturbed when they find out that Newtonian mechanics ‘only’ works over a couple dozen orders of magnitude. They’d really freak out if they realized how few theories work well when applied over two orders of magnitude.”
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@StatModeling
Andrew Gelman et al.
8 months
The authors of research papers have no obligation to share their data and code, and I have no obligation to believe anything they write.
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@StatModeling
Andrew Gelman et al.
2 years
At last! Incontrovertible evidence (p=0.0001) that people over 40 are older, on average, than people under 40.
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@StatModeling
Andrew Gelman et al.
5 years
No, its not correct to say that you can be 95% sure that the true value will be in the confidence interval
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@StatModeling
Andrew Gelman et al.
2 years
Regression and Other Stories free pdf!
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@StatModeling
Andrew Gelman et al.
1 year
Free Bayesian Data Analysis course
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@StatModeling
Andrew Gelman et al.
2 years
How do things work at top econ journals, exactly? This is one weird-ass story:
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@StatModeling
Andrew Gelman et al.
6 years
Regression to the mean continues to confuse people and lead to errors in published research
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@StatModeling
Andrew Gelman et al.
4 months
In judo, before you learn the cool moves, you first have to learn how to fall. Maybe we should be training researchers the same way: first learn how things can go wrong, and only when you get that lesson down do you learn the fancy stuff.
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@StatModeling
Andrew Gelman et al.
5 years
How post-hoc power calculation is like a shit sandwich
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@StatModeling
Andrew Gelman et al.
6 years
Here are the data and code for that study of Puerto Rico deaths
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@StatModeling
Andrew Gelman et al.
2 months
Our new book, Active Statistics, is now available!
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@StatModeling
Andrew Gelman et al.
5 years
Abandoning statistical significance is both sensible and practical
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@StatModeling
Andrew Gelman et al.
1 year
Bayesian statistics and machine learning: How do they differ?
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@StatModeling
Andrew Gelman et al.
6 years
How feminism has made me a better scientist
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@StatModeling
Andrew Gelman et al.
4 years
Simple Bayesian analysis inference of coronavirus infection rate from the Stanford study in Santa Clara county
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@StatModeling
Andrew Gelman et al.
10 months
The causal revolution in econometrics has gone too far.
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@StatModeling
Andrew Gelman et al.
11 months
Here are some ways of making your study replicable. (No, it’s not preregistration or increasing the sample size!)
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@StatModeling
Andrew Gelman et al.
3 years
The Pfizer-Biontech Vaccine May Be A Lot More Effective Than You Think?
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@StatModeling
Andrew Gelman et al.
1 year
“Risk ratio, odds ratio, risk difference… Which causal measure is easier to generalize?”
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@StatModeling
Andrew Gelman et al.
4 years
Thank you, James Watson. Thank you, Peter Ellis. (Lancet: You should do the right thing and credit them for your retraction. Actually, do one better and invite them to write a joint editorial in your journal.)
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@StatModeling
Andrew Gelman et al.
4 years
That “not a real doctor” thing . . . It’s kind of silly for people to think that going to medical school for a few years will give you the skills necessary to be able to evaluate research claims in medicine or anything else.
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@StatModeling
Andrew Gelman et al.
1 year
4 different meanings of p-value (and how my thinking has changed)
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@StatModeling
Andrew Gelman et al.
3 years
Don’t kid yourself. The polls messed up—and that would be the case even we’d forecasted Biden losing Florida and only barely winning the electoral college
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@StatModeling
Andrew Gelman et al.
2 years
Open AI gets GPT-3 to work by hiring an army of humans to fix GPT’s bad answers.
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@StatModeling
Andrew Gelman et al.
3 years
Webinar: An introduction to Bayesian multilevel modeling with brms
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@StatModeling
Andrew Gelman et al.
4 years
Regression and Other Stories translated into Python!
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@StatModeling
Andrew Gelman et al.
2 months
“On the uses and abuses of regression models: a call for reform of statistical practice and teaching”: We’d appreciate your comments . . .
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@StatModeling
Andrew Gelman et al.
5 years
Here are some examples of real-world statistical analyses that don’t use p-values and significance testing.
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@StatModeling
Andrew Gelman et al.
11 months
Ted-talking data fakers who write books about lying and rule-breaking . . . what’s up with that?
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@StatModeling
Andrew Gelman et al.
3 years
The Bayesian cringe
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@StatModeling
Andrew Gelman et al.
4 years
epidemia: An R package for Bayesian epidemiological modelling
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@StatModeling
Andrew Gelman et al.
5 years
Ben Lambert. 2018. A Student’s Guide to Bayesian Statistics.
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@StatModeling
Andrew Gelman et al.
3 years
Bayesian inference completely solves the multiple comparisons problem
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@StatModeling
Andrew Gelman et al.
14 days
The data are on a 1-5 scale, the mean is 4.61, and the standard deviation is 1.64 . . . What’s so wrong about that??
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@StatModeling
Andrew Gelman et al.
2 years
“A much bigger problem is the tension between the difficulty of statistics and the demand for it to be simple and readily available.”
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@StatModeling
Andrew Gelman et al.
4 months
Bayesians moving from defense to offense: “I really think it’s kind of irresponsible now not to use the information from all those thousands of medical trials that came before. Is that very radical?”
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@StatModeling
Andrew Gelman et al.
3 years
“Not statistically significant” is not the same as zero
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@StatModeling
Andrew Gelman et al.
3 years
Top 10 Ideas in Statistics That Have Powered the AI Revolution
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@StatModeling
Andrew Gelman et al.
4 years
Regression and Other Stories is available!
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@StatModeling
Andrew Gelman et al.
19 days
Simulation to understand two kinds of measurement error in regression
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@StatModeling
Andrew Gelman et al.
4 years
What’s wrong with Bayes
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@StatModeling
Andrew Gelman et al.
5 years
All the names for hierarchical and multilevel modeling
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@StatModeling
Andrew Gelman et al.
5 years
Why “statistical significance” doesn’t work: An example.
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@StatModeling
Andrew Gelman et al.
1 month
Hey! Here’s a study where all the preregistered analyses yielded null results but it was presented in PNAS as being wholly positive.
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@StatModeling
Andrew Gelman et al.
5 years
An R package for multiverse analysis and counting researcher degrees of freedom
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@StatModeling
Andrew Gelman et al.
6 years
Bayesians are frequentists
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@StatModeling
Andrew Gelman et al.
3 years
Bayesian methods and what they offer compared to classical econometrics
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@StatModeling
Andrew Gelman et al.
2 years
The worst of both worlds: A comparative analysis of errors in learning from data in psychology and machine learning
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@StatModeling
Andrew Gelman et al.
4 years
Male bisexuality gets Big PNAS Energy
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@StatModeling
Andrew Gelman et al.
6 years
Awesome MCMC animation site by Chi Feng! On Github!
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@StatModeling
Andrew Gelman et al.
1 month
Bayesian inference with informative priors is not inherently “subjective”
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@StatModeling
Andrew Gelman et al.
2 years
Just another day at the sausage factory . . . It’s just funny how regression discontinuity analyses routinely produce these ridiculous graphs and the authors and journals don’t even seen to notice.
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@StatModeling
Andrew Gelman et al.
10 months
When your regression model has interactions, do you need to include all the corresponding main effects?
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@StatModeling
Andrew Gelman et al.
4 years
“Why We Sleep” update: some thoughts while we wait for Matthew Walker to respond to Alexey Guzey’s criticisms
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@StatModeling
Andrew Gelman et al.
6 years
Multilevel data collection and analysis for weight training (with R code)
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@StatModeling
Andrew Gelman et al.
6 years
How to read (in quantitative social science). And by implication, how to write.
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@StatModeling
Andrew Gelman et al.
3 years
The social sciences are useless. So why do we study them? Here’s a good reason:
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@StatModeling
Andrew Gelman et al.
4 years
This one’s important: Bayesian workflow for disease transmission modeling in Stan
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@StatModeling
Andrew Gelman et al.
6 years
The “80% power” lie
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@StatModeling
Andrew Gelman et al.
4 months
Plagiarism means never having to say you’re clueless.
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@StatModeling
Andrew Gelman et al.
7 months
How did some of this goofy psychology research become so popular? I think it’s a form of transubstantiation.
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@StatModeling
Andrew Gelman et al.
3 years
The rise and fall and rise of randomized controlled trials (RCTs) in international development
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@StatModeling
Andrew Gelman et al.
3 years
“Causal Inference: The Mixtape”
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@StatModeling
Andrew Gelman et al.
7 years
My favorite definition of statistical significance
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@StatModeling
Andrew Gelman et al.
5 years
Maybe it’s time to let the old ways die; or We broke R-hat so now we have to fix it.
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@StatModeling
Andrew Gelman et al.
6 years
Stan on the web! (thanks to RStudio)
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@StatModeling
Andrew Gelman et al.
5 years
You should (usually) log transform your positive data
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@StatModeling
Andrew Gelman et al.
3 years
Bayesian Workflow
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@StatModeling
Andrew Gelman et al.
4 years
No, I don’t think that this study offers good evidence that installing air filters in classrooms has surprisingly large educational benefits.
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@StatModeling
Andrew Gelman et al.
29 days
It’s Ariely time! They had a preregistration but they didn’t follow it.
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@StatModeling
Andrew Gelman et al.
6 years
The moral hazard of quantitative social science: Causal identification, statistical inference, and policy
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@StatModeling
Andrew Gelman et al.
3 years
When MCMC fails: The advice we’re giving is wrong. Here’s what we you should be doing instead. (Hint: it’s all about the folk theorem.)
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@StatModeling
Andrew Gelman et al.
4 years
Why do a within-person rather than a between-person experiment?
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@StatModeling
Andrew Gelman et al.
7 years
What readings should be included in a seminar on the philosophy of statistics, the replication crisis, causation,
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@StatModeling
Andrew Gelman et al.
3 years
The ML uncertainty revolution is … now?
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@StatModeling
Andrew Gelman et al.
1 year
The problems with p-values are not just with p-values.
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@StatModeling
Andrew Gelman et al.
3 years
A fun activity for your statistics class: One group of students comes up with a stochastic model for a decision process and simulates fake data from this model; another group of students takes this simulated dataset and tries to learn about the
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@StatModeling
Andrew Gelman et al.
6 years
What to teach in a statistics course for journalists?
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@StatModeling
Andrew Gelman et al.
6 months
We were gonna submit something to Nature Communications, but then we found out they were charging $6290 for publication. For that amount of money, we could afford 37% of an invitation to a conference featuring Grover Norquist, Gray Davis, and a rabbi, or
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@StatModeling
Andrew Gelman et al.
6 months
“Modeling Social Behavior”: Paul Smaldino’s cool new textbook on agent-based modeling
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@StatModeling
Andrew Gelman et al.
4 years
Online Causal Inference Seminar starts next Tues!
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@StatModeling
Andrew Gelman et al.
3 years
“While critique is certainly an important part of improving scientific fields, we do not want to set a precedent or encourage submission of articles that only critique the methods used by others.”
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