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Data source: AI analysis of xkcd comics
Additional Info: I designed a Python workflow to perform OCR on every xkcd comic, feed that text into a large language model, and ask the model whether this comic was about the category named in the title.

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xkcd comics published about math correlates with...

VariableCorrelationYearsHas img?
Total sales of commercial vehicles in Chinar=0.967yrsNo
The number of first-line supervisors of police and detectives in South Dakotar=0.8613yrsYes!
Annual US household spending on prescription drugsr=0.8316yrsNo



xkcd comics published about math also correlates with...

VariableCorrelationYearsSys. Score
Average length of SciShow Space YouTube videosr=0.8510yrs264
The number of university engineering teachers in South Carolinar=0.8512yrs256
The number of first-line supervisors of police and detectives in Idahor=0.8513yrs256
Number of edits to the Wikipedia article for Charles IIIr=0.7816yrs168
Greece's annual import volumer=0.7716yrs162
Brad Pitt's net worthr=0.7616yrs162
Google searches for 'Johnny Depp'r=0.7317yrs159
Liquefied petroleum gas used in United Statesr=0.7416yrs156
Rating for best Need for Speed game releasedr=0.847yrs148
How provocative OverSimplified YouTube video titles arer=0.797yrs148
Air pollution in Ca¤on City, Colorador=0.7716yrs146
Air quality in Ca¤on City, Colorador=0.7716yrs146
Air quality in Ca¤on City, Colorador=0.7716yrs146
Hydopower energy generated in Eswatinir=0.7515yrs145
Average length of PBS Space Time YouTube videosr=0.769yrs145
Kerosene used in Iraqr=0.7515yrs142
The number of movies Jim Carrey appeared inr=0.6817yrs142
Annual US household spending on processed fruitsr=0.7216yrs140
Google searches for 'who is prince william'r=0.6916yrs138
Rain in Sydneyr=0.716yrs138
Marvell Technology's stock price (MRVL)r=0.6917yrs136
Customer satisfaction with Coxr=0.6915yrs136
Rain in Sydneyr=0.6816yrs136
Rain in Sydneyr=0.6816yrs136
Total value of all $50 bills printedr=0.6912yrs136
Number of times 17 was a winning Mega Millions numberr=0.6517yrs134
NVIDIA's stock price (NVDA)r=0.6517yrs134
Popularity of the first name Dionr=0.6716yrs131
US household spending on nonalcoholic beveragesr=0.6616yrs131
Newmont's stock price (NEM)r=0.6517yrs130
Popularity of the first name Tater=0.6616yrs130
Popularity of the first name Samirar=0.6616yrs130
Annual U.S. inflation rater=0.6416yrs128
London Gold Pricesr=0.796yrs128
Searches for 'never gonna give you up'r=0.5717yrs126
Total private high school enrollment in the United Statesr=0.6116yrs124
Number of times 21 was a winning Mega Millions numberr=0.5817yrs123
The number of movies Marilyn Monroe appeared inr=0.5516yrs122
The number of database administrators in Tennesseer=0.8414yrs121
Number of times 25 was a winning Mega Millions numberr=0.5717yrs121
Michael Schumacher's Formula One Rankingr=0.746yrs120
Number of times 16 was a winning Mega Millions numberr=0.5617yrs120
Powerball lottery numbersr=0.5913yrs120
Google searches for 'who is elon musk'r=0.5717yrs120
The number of movies Russell Crowe appeared inr=0.5317yrs120
Public school high school enrollments in the United Statesr=0.5816yrs119
Gasoline Prices in the USr=0.5616yrs119
The number of marketing managers in Mississippir=0.8216yrs110
How nerdy Computerphile YouTube video titles arer=0.7111yrs110
The number of crane operators in Tennesseer=0.8216yrs100
Hydopower energy generated in El Salvadorr=0.6415yrs98
Average number of comments on Technology Connections YouTube videosr=0.79yrs96
Advanced Micro Devices' stock price (AMD)r=0.6217yrs96
Air pollution in Shreveport, Louisianar=0.816yrs96
Popularity of the first name Georginar=0.6316yrs95
The number of movies Halle Berry appeared inr=0.5416yrs90
The number of kindergarten teachers in Montanar=0.8116yrs88
Hydopower energy generated in Ukrainer=0.6415yrs88
Google searches for 'climate change'r=0.5616yrs88
Tesla's stock price (TSLA)r=0.613yrs85
Average views of MrBeast's YouTube videosr=0.6612yrs83
Popularity of the first name Hallier=0.6116yrs82
Air pollution in Alexandria, Louisianar=0.716yrs80
The number of industrial truck and tractor operators in New Mexicor=0.8116yrs78
Hydopower energy generated in Surinamer=0.6315yrs77
Fortinet's stock price (FTNT)r=0.6214yrs73
The average number of likes on MrBeast's YouTube videosr=0.6412yrs70
The number of budget analysts in Tennesseer=0.8116yrs68
Renewable energy production in Bruneir=0.6610yrs66
Applied Materials' stock price (AMAT)r=0.5917yrs62
How clickbait-y MrBeast's YouTube video titles arer=0.6412yrs60
The number of insurance underwriters in Arkansasr=0.816yrs57
Solar power generated in Bruneir=0.6610yrs56
How insightful 'Be Smart' science YouTube video titles arer=0.6511yrs50
Prologis' stock price (PLD)r=0.5817yrs50
The number of archivists in Oklahomar=0.816yrs47
Hydopower energy generated in North Korear=0.6215yrs46
ST Microelectronics' stock price (STM)r=0.5817yrs40
How professional-sounding LEMMiNO YouTube video titles arer=0.6312yrs38
The number of procurement clerks in Hawaiir=0.7916yrs36
Hydopower energy generated in South Africar=0.6215yrs36
HP Inc.'s stock price (HPQ)r=0.5817yrs30
The number of jewelers in Minnesotar=0.7916yrs26
How provocative MrBeast's YouTube video titles arer=0.612yrs24
Hydopower energy generated in Brazilr=0.615yrs22
The number of budget analysts in Montanar=0.7916yrs16
Biomass power generated in Malaysiar=0.6113yrs12
The number of floral designers in Utahr=0.7916yrs6
Fossil fuel use in Slovakiar=0.615yrs2
The number of school teachers in North Carolinar=0.813yrs-4
Jet fuel used in Albaniar=0.6115yrs-9
The number of laundry and dry-cleaning workers in Montanar=0.7816yrs-16
Solar power generated in Belarusr=0.78yrs-20
The number of nursing instructors and teachers in New Hampshirer=0.7816yrs-26
Hydopower energy generated in Thailandr=0.5815yrs-30
The number of college administrators in Pennsylvaniar=0.7816yrs-36
Liquefied petroleum gas used in Mexicor=0.616yrs-40
The number of art directors in New Jerseyr=0.7716yrs-48


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You caught me! While it would be intuitive to sort only by "correlation," I have a big, weird database. If I sort only by correlation, often all the top results are from some one or two very large datasets (like the weather or labor statistics), and it overwhelms the page.

I can't show you *all* the correlations, because my database would get too large and this page would take a very long time to load. Instead I opt to show you a subset, and I sort them by a magic system score. It starts with the correlation, but penalizes variables that repeat from the same dataset. (It also gives a bonus to variables I happen to find interesting.)
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