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Bill Petti

@billpetti.bsky.social
1.4K followers 448 following 8 posts

Data and Decision Science. I used to do some baseball research. ⚾️🏑🥍📈 Creator: baseballr package for #rstats (billpetti.github.io).

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Reposted by Bill Petti
Aaron Sojourner @aaronsojourner.org · 01/08/2025
The statement from the Friends of BLS, which is co-chaired by former BLS Commissioners appointed by Obama and Trump. bsky.app/profile/aaro...
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Reposted by Bill Petti
Ben Casselman @bencasselman.bsky.social · 02/08/2025
For months, people have been asking me whether I still trusted gov’t data. My answer was always the same: The stats agencies faced longstanding challenges, some of which Trump was making worse. But there was no sign of political meddling. I can’t say that anymore. www.nytimes.com/2025/08/01/b...
nytimes.com
Trump, Claiming Weak Jobs Numbers Were ‘Rigged,’ Fires Labor Official
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Bill Petti @billpetti.bsky.social · 16/02/2025
Latest installment of Kids are Great…
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Reposted by Bill Petti
Jonathan Judge @bachlaw.bsky.social · 13/12/2024
Today, we explore an overlooked area: how to model average maximum athletic effort, skills at which athletes repeatedly try their hardest, resulting in a heavily left-skewed distribution. Hitting a baseball, throwing a football deep, a first serve in tennis ... examples are everywhere. 1/3
baseballprospectus.com
Exit Velocity: Modeling Average Maximum Athletic Effort | Baseball Prospectus
A better way to look at average exit velocity.
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Reposted by Bill Petti
Dan Szymborski @dszymborski.fangraphs.com · 20/11/2024
For those new to BlueSky and interested in FanGraphs writers -- or those who aren't, making this an odd choice -- I put together a FanGraphs starter pack of writers/editors who currently are staffers or contributors to the site. go.bsky.app/Q1Dm1ED
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Bill Petti @billpetti.bsky.social · 11/12/2024
When you realize @jaysonst.bsky.social reads your research (@jeffwzimmerman.bsky.social) www.nytimes.com/athletic/598... As Juan Soto embarks on $765M future, Ted Williams’ shadow lingers: Where could he end up?
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Reposted by Bill Petti
Tangotiger @tangotiger.com · 02/12/2024
So, Jim Albert was kind enough to share how to code the color palette in R: baseballwithr.wordpress.com/2024/12/02/u... cc: @billpetti.bsky.social
baseballwithr.wordpress.com
Using Statcast Colors for Pitch Types in R
Tom Tango recently posted in BlueSky the color codes for the pitch types that they use in Baseball Savant. He asked me by email if there was a way to create a dictionary or library to represent the…
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Bill Petti @billpetti.bsky.social · 25/11/2024
Proud dad moment. Congrats to our eldest on her commitment to play lacrosse and continue her studies at Mount Saint Mary’s University
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Reposted by Bill Petti
ᴅʀ. ᴍᴏᴡɪɴᴄᴋᴇʟ'ꜱ @drmowinckels.io · 23/10/2024
Here is my opinion on important #rstats accounts to follow. go.bsky.app/8pYGwbP It is very much a curated list by me, and reflects my own opinion. I will be adding to it as I discover more folks i think should be on the list.
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Bill Petti @billpetti.bsky.social · 11/11/2024
Tore rib cartilage following a sneeze
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Reposted by Bill Petti
Sky Kalkman @skykalkman.bsky.social · 10/11/2024
Created a Baseball Analysis Nerds starter pack. Very much a work in progress, please send me more suggestions, including yourself. (If I'm not familiar with the account, will help if they have an obviously analytics-slanted profile or posts on Blue Sky.) go.bsky.app/GZjLuxK
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