TIL you can calculate the mean and the variance in one pass through a vector 🤯 Really nice article showing how: nullbuffer.com/articles/wel...

Come be a razorback! We are hiring two positions this year at the U of Arkansas! Macro/General Equilibrium: www.aeaweb.org/joe/listing.... Applied Micro: www.aeaweb.org/joe/listing.... Northwest Arkansas is consistently ranked one of the best places to live. Here's some highlights!

Does anyone have really good examples of a github repository for a research paper. Trying to get good examples for a lesson I'm giving

github.com/kylebutts/vs... If you are using vscode and stata, you should try out my extension. It uses interactive window which let's you write in a `.do` file but get a notebook type experience.

The answer is all 0s !!! what a frustrating choice !!!!

Stata quiz. what do you think the output of `tab` will be? ``` sysuse auto, replace reg mpg i.rep78 if rep78 == 2, nocons predict xb tab xb if rep78 != 2 ```

kylebutts.com/blog/2025-04... A short blog post for efficient stats coding. All about the importance of dimensionality when doing matrix operations ft. 100x speed-up of my code

TIL how to download census data (www2.census.gov) super simply. Finder: Go > Connect to Server > ftp://ftp2.census.gov/. Login as guest and 🤯

great little explanation on why to avoid passive voice refactoringenglish.com/chapters/pas...

R tip: If you run code but forget to save it in a variable, you can use `.Last.value` in the console. More, if you want to copy the result to your clipboard, use `clipr::write_last_clip`:

🚨 The "penguins" data is coming to the base #rstats{datasets} in 4.5.0! @ellakaye.co.uk & @HeathrTurnr.fosstodon.org.ap.brid.gy r prepared an adapted and a raw version of the data set based on the {palmerpenguins} 📦 by @allisonhorst.bsky.social @apreshill.com and Kristen Gorman. 📈 Scatter plot:

snow day in Fayetteville

👀 github.com/posit-dev/po...

Quick tip: If you store a pdf on GitHub, like this: github.com/kylebutts/Ge... You can make an easy to view link by replacing `github.com/` with `nbviewer.org/github/` and it looks like this: nbviewer.org/github/kyleb...

You can tell companies’ AI projects are going really well because every app is bait-and-switching their most commonly pressed button with something called like “Answers By Glorp” to get people to even accidentally use it

judge: “so you said the true vote share is in this interval 95% of the time? how could that be true if the true vote share is not in that interval”

Working on a new R package. Looking for applications that do two things: 1. DID with y to show an effect 2. DID with X to show a possible “mechanism” of why treatment changed y This could be a published paper or a paper you're working on (that I might help make "fancier" / cooler !!)

Is there a better sign of AI hype than MICROSOFT creating a package to convert docx/pptx -> md USING CHAT GPT ????https://github.com/microsoft/markitdown

never felt so seen

Now would be a great time for overleaf users (my coauthors) to delete their account and stop making me use the bad web app

The Environmental Inequality Lab is hiring 2 new pre-docs to join our team! We do research in environmental economics but those with interests in labor/public/urban/spatial/development economics should def apply. Apply here: tinyurl.com/EIL-pre-doc @AereOrg

Working on my applied metrics course; Here are my figures using Ashenfelter's dip (1978 paper)

In Judge FE style settings, how many observations are usually available per judge? Is there ever settings with few number of observations?

Been formalizing a lot of my workflow into R packages. Today, I have added `tikzsave` to `kfbmisc` package for making figures: ggplot() -> tikzpicture -> pre-compiled into pdf (using latex themes) gist.github.com/kylebutts/9c...

Metrics question: I have a simple regression: y_i = \beta x_i + u_i y_i is an estimated quantity from a survey and I have the standard error on that estimate. What's the "correct" way to upweight observations with small standard errors?

R Tip: if you have are doing some piping and want to make a quick plot or table, use base R's `with` function (`within` is great too!)

WIP: Write R scripts like you normally do and have them automagically turn into a git-friendly log book that you can share with your coauthors using quarto html: kylebutts.github.io/repro_project/ md: github.com/kylebutts/re...

The #1 best piece of coding advice is whenever you think "oh that's kind of a clever solution", put it into a function. Makes using code from past projects way easier

Chris Walter's Mixtape Session on Empirical Bayes methods is next week! I developed this app to build intuition on linear shrinkage estimators (on simulated school value-added data) Shiny app: mixtape.shinyapps.io/Linear-Shrin... More info on the course: www.mixtapesessions.io/session/empi...

Delighted by this really well-made interactive site about all different probability distributions: www.acsu.buffalo.edu/~adamcunn/pr...

While prepping my JMP slides, I've made some pretty cool updates to my latex slides template: - color rows/cells (with reveal options) - bottom left beamer buttons: \bottomleft{} - customize theme colors(!) - full-size figures: \imageframe{} github.com/kylebutts/la...

I'm unreasonably excited about the \bottomleft{\beamerbutton{}} trick I've added to my latex-slides template. Look how nice they are down there!! github.com/kylebutts/te...

New package `fwlplot` is ready to be tried out by some volunteers! This is a 1:1 drop-in replacement for `feols` but instead produces a scatter plot of residualized y on residualized x (first x-var in formula). Works with fixest multi features, e.g. github.com/kylebutts/fw...

Really great timing for this R&R 🥳

Does anyone have a way of citing working papers in .bib that they think works well? I sort of just do whatever google scholar does..

Hi all! I'm Kyle at CU Boulder in the Economics department (and a job market candidate !!). I mostly tweet about my papers and my open source software/resources. I'll start off with a bsky exclusive. All the pdf slides from NBER methods lectures back to 2007: github.com/kylebutts/nb...