Regression to the Mean Girls

11 Episodes
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By: Sarah Lotspeich and Lucy D'Agostino McGowan

This is Regression to the Mean Girls where we chat with brilliant data people about their silliest side quests. We’re mean, as in average, but actually very nice! Come sit with us!

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The Kiss Effect on Television Ratings with Ashley Mullan
The Kiss Effect on Television Ratings with Ashley Mullan episode artwork
#11
Last Monday at 11:08 AM

Ashley Mullan join ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Sarah Lotspeich⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ and ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Lucy D'Agostino McGowan⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ with a data-driven side quest into how a TV couples first kiss impacts ratings.


Follow along on instagram: 

⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠@regressiontothemeangirls⁠⁠


BART for Baseball with Sameer Deshpande
BART for Baseball with Sameer Deshpande episode artwork
#10
11/02/2026

Sameer Deshpande join ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Sarah Lotspeich⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ and ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Lucy D'Agostino McGowan⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ with a data-driven side quest into using BART for baseball!


Check out the details here: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠regressiontothemeangirls.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠

Follow along on instagram: 

⁠⁠⁠⁠⁠⁠⁠⁠⁠@regressiontothemeangirls⁠⁠


Dancing with the Stats with Grayson Weavil, Madeline Merrill, and Wesley Krieger
Dancing with the Stats with Grayson Weavil, Madeline Merrill, and Wesley Krieger episode artwork
#9
10/26/2026

Grayson Weavil, Madeline Merrill, and Wesley Krieger join ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Sarah Lotspeich⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ and ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Lucy D'Agostino McGowan⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ with a data-driven side quest into Dancing with the Stars stats.


Check out the details here: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠regressiontothemeangirls.com⁠⁠⁠⁠⁠⁠⁠⁠⁠

Follow along on instagram: 

⁠⁠⁠⁠⁠⁠⁠⁠@regressiontothemeangirls⁠⁠


Mixed Effects, Mixed Signals: Love Island Kissing Scores with Hannah Barton
Mixed Effects, Mixed Signals: Love Island Kissing Scores with Hannah Barton episode artwork
#8
10/19/2026

Hannah Barton joins ⁠⁠⁠⁠⁠⁠⁠⁠⁠Sarah Lotspeich⁠⁠⁠⁠⁠⁠⁠⁠⁠ and ⁠⁠⁠⁠⁠⁠⁠⁠⁠Lucy D'Agostino McGowan⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ with a data-driven side quest into Love Island Kissing Scores.


Check out the details here: ⁠⁠⁠⁠⁠⁠⁠⁠⁠regressiontothemeangirls.com⁠⁠⁠⁠⁠⁠⁠⁠⁠

Follow along on instagram: 

⁠⁠⁠⁠⁠⁠⁠@regressiontothemeangirls⁠⁠


Every Man's Causal Inference with Roger Peng
Every Man's Causal Inference with Roger Peng episode artwork
#7
10/12/2026

Roger Peng joins ⁠⁠⁠⁠⁠⁠⁠⁠Sarah Lotspeich⁠⁠⁠⁠⁠⁠⁠⁠ and ⁠⁠⁠⁠⁠⁠⁠⁠Lucy D'Agostino McGowan⁠⁠⁠⁠⁠⁠⁠⁠⁠ with a data-driven side quest into becoming an accidental business man.


Check out the details here: ⁠⁠⁠⁠⁠⁠⁠⁠regressiontothemeangirls.com⁠⁠⁠⁠⁠⁠⁠⁠

Follow along on instagram: 

⁠⁠⁠⁠⁠⁠@regressiontothemeangirls⁠⁠


The Marshmallow Test (Not That One) with Mattan Ben-Shachar
The Marshmallow Test (Not That One) with Mattan Ben-Shachar episode artwork
#6
10/05/2026

Mattan Ben-Shachar joins ⁠⁠⁠⁠⁠⁠⁠Sarah Lotspeich⁠⁠⁠⁠⁠⁠⁠ and ⁠⁠⁠⁠⁠⁠⁠Lucy D'Agostino McGowan⁠⁠⁠⁠⁠⁠⁠⁠ with a data-driven side quest into whether different colored marshmallows taste different.

*Be sure to listen to the end for a surprising addendum!


Check out the full process here: ⁠⁠⁠⁠⁠⁠⁠regressiontothemeangirls.com⁠⁠⁠⁠⁠⁠⁠

Follow along on instagram: 

⁠⁠⁠⁠⁠@regressiontothemeangirls⁠⁠


Election Data Web Scraping with Emily Riederer
Election Data Web Scraping with Emily Riederer episode artwork
09/28/2026

Emily Riederer⁠⁠ (Capital One) joins ⁠⁠⁠⁠⁠⁠Sarah Lotspeich⁠⁠⁠⁠⁠⁠ and ⁠⁠⁠⁠⁠⁠Lucy D'Agostino McGowan⁠⁠⁠⁠⁠⁠⁠ with a data-driven side quest into scraping election data. 


Check out the full process here: ⁠⁠⁠⁠⁠⁠regressiontothemeangirls.com⁠⁠⁠⁠⁠⁠

Follow along on instagram: 

⁠⁠⁠⁠@regressiontothemeangirls⁠⁠


The Art of Web Scraping Art with Hadley Wickham
The Art of Web Scraping Art with Hadley Wickham episode artwork
#4
09/21/2026

Hadley Wickham (Posit) joins ⁠⁠⁠⁠Sarah Lotspeich⁠⁠⁠⁠ and ⁠⁠⁠⁠Lucy D'Agostino McGowan⁠⁠⁠⁠⁠ with a data-driven side quest into building a web scraper to help acquire art.


Check out the full process here: ⁠⁠⁠⁠regressiontothemeangirls.com⁠⁠⁠⁠


Links to content we chat about on the episode:

⁠⁠Weston Lambert ArtParallel strands between learning crochet and learning programming by Maëlle Salmon


Follow along on instagram: 

⁠⁠@regressiontothemeangirls


The Comfort of Competence and the Speed of Justice, According to Law & Order, with Christine Zhang
The Comfort of Competence and the Speed of Justice, According to Law & Order, with Christine Zhang episode artwork
#3
09/14/2026

Christine Zhang (New York Times) joins ⁠⁠Sarah Lotspeich⁠⁠ and ⁠⁠Lucy D'Agostino McGowan⁠⁠⁠ with a data-driven side quest into the TV show Law and Order.


Check out the full analysis here: ⁠⁠regressiontothemeangirls.com⁠⁠


Links to content we chat about on the episode:

Wrong Number newsletterThe Speed of Justice, According to Law & Order


Follow along on instagram:

@regressiontothemeangirls


The Work Is Mysterious and Important: Severance Data
The Work Is Mysterious and Important: Severance Data episode artwork
#2
09/07/2026

⁠Lucy D'Agostino McGowan⁠ and ⁠Sarah Lotspeich⁠ return with a data-driven side quest into the TV show Severance. Lucy analyzes whether Milchick really uses more complicated language than his colleagues.


Check out the full analysis here: ⁠regressiontothemeangirls.com⁠


Links to content we chat about on the episode:

⁠Lucy's Severance data R package [mdr]⁠⁠Lucy's other Severance analyses⁠⁠Dunnet⁠⁠Radial plot of who is speaking in Severance ⁠


Follow along on instagram:

@regressiontothemeangirls


Romance by the Numbers: First Sparks Across Tropes
Romance by the Numbers: First Sparks Across Tropes episode artwork
#1
08/31/2026

Sarah Lotspeich and Lucy D'Agostino McGowan introduce Regression to the Mean Girls, a podcast about data-driven side quests in pop culture. In this episode, Sarah analyzes 45 recent romance novels to find out how different romance tropes affect the timing of the couple’s first kiss.

Check out the full analysis here: https://regressiontothemeangirls.com/


Links to content we chat about on the episode:

Edward L. Kaplan and the Kaplan-Meier Survival CurveNonparametric Estimation from Incomplete ObservationsNot just love, actually: why romance fiction is boomingWhat is the lipstick index?


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