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Data source: Environmental Protection Agency
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Air quality in Billings, Montana correlates with...

VariableCorrelationYearsSys. Score
How clickbait-y OverSimplified YouTube video titles arer=0.937yrs284
Visitors to SeaWorld Floridar=0.8215yrs192
Kerosene used in Bahrainr=-0.8942yrs190
MTV VMA Viewer Countr=0.6623yrs153
Customer satisfaction with FOXNews.comr=0.6812yrs152
Customer satisfaction with NBCNews.comr=0.6320yrs152
Final match set count at Chennai Openr=0.6127yrs150
Customer satisfaction with ABCNews.comr=0.5720yrs143
Bankruptcy filings in the USr=0.5924yrs134
Mega millions lottery numbersr=0.4921yrs130
Petroluem consumption in Greenlandr=0.4842yrs128
Fossil fuel use in Serbiar=0.616yrs124
Customer satisfaction with Dollar Generalr=0.5314yrs121
The number of security guards in Montanar=0.5520yrs118
The number of file clerks in Montanar=0.5520yrs118
xkcd comics published about pop culturer=0.5317yrs118
Freezing temperatures in Torontor=0.5419yrs118
Visitors to SeaWorld Californiar=0.4615yrs114
xkcd comics published about childhoodr=0.517yrs114
Grand Slam Finals Played by Serena Williamsr=0.5119yrs112
The number of movies Gerard Butler appeared inr=0.5427yrs112
Academy Awards Ceremony Audience Sizer=0.4723yrs110
Google searches for 'how to get to antartica'r=0.4820yrs110
Cigarette Smoking Rate for US adultsr=0.4821yrs109
Rock N Roll Hall of Fame Inductee Countr=-0.6329yrs109
Total likes of MinuteEarth YouTube videosr=-0.7611yrs109
Number of Atlantic Hurricanes each yearr=-0.7316yrs108
Andy Murray's ATP final appearancesr=0.4918yrs108
Total annual cinema attendance in the UKr=0.4722yrs108
Average length of Vihart's YouTube videosr=-0.7115yrs108
US production of fluid beverage milkr=0.4622yrs107
US dairy skim solids used to produce milk fat and skim solids byproduct fluid beverage milkr=0.4622yrs106
Bachelor's degrees awarded in Precision productionr=0.6410yrs105
Average SAT score in critical readingr=-0.4733yrs100
Bankruptcies in Californiar=0.5711yrs99
The marriage rate in Montanar=-0.623yrs99
Votes for Democratic Senators in Montanar=0.5114yrs98
Average SAT score in mathr=-0.4533yrs98
FedEx's stock price (FDX)r=-0.5622yrs96
Pirate attacks globallyr=0.4614yrs94
Master's degrees awarded in Visual and performing artsr=0.6310yrs94
The number of printing press operators in Montanar=0.513yrs94
Activision Blizzard's stock price (ATVI)r=-0.6413yrs93
Liquefied petroleum gas used in Serbiar=0.6116yrs92
Worldwide Harry Potter Movies Revenuer=0.4911yrs92
United States' Fruit Juice Export Volumer=0.4713yrs90
The Walt Disney Company's stock price (DIS)r=-0.4722yrs90
Google searches for 'Brexit'r=0.488yrs88
Patents granted to General Electricr=0.4612yrs87
Global sales revenue of elevators and escalatorsr=0.487yrs86
Master's degrees awarded in Architecturer=0.5810yrs86
Google searches for 'Suez Canal'r=-0.6720yrs84
Popularity of the first name Janayr=-0.5243yrs84
Average length of Extra History YouTube videosr=-0.6912yrs73
Jet fuel used in Chadr=-0.5542yrs66
The number of lifeguards and ski patrol in Montanar=0.4519yrs62
Average length of Mark Rober YouTube videosr=-0.6613yrs61
Global Payments' stock price (GPN)r=-0.5222yrs60
Associates degrees awarded in Fire control and safetyr=0.5711yrs54
Google searches for 'suez canal'r=-0.6520yrs52
Jet fuel used in Guinear=-0.5142yrs52
The number of childcare workers in Montanar=0.4813yrs51
Zimmer Biomet Holdings' stock price (ZBH)r=-0.5122yrs49
Average length of Deep Look YouTube videosr=-0.6710yrs49
Associates degrees awarded in Management information systemsr=0.5411yrs40
Solar power generated in South Korear=-0.5632yrs40
MercadoLibre's stock price (MELI)r=-0.5716yrs38
The average number of likes on Matt Parker's YouTube videosr=-0.6313yrs38
Sales of LP/Vinyl Albumsr=-0.4730yrs32
The number of building inspectors in Montanar=-0.6520yrs31
Jet fuel used in Solomon Islandsr=-0.5635yrs30
Medtronic's stock price (MDT)r=-0.4922yrs27
Global revenue from elevator and escalator salesr=0.487yrs27
Average length of Matt Parker's YouTube videosr=-0.5813yrs23
Electronic Arts' stock price (EA)r=-0.4922yrs17
Liquefied petroleum gas used in Kosovor=0.5214yrs16
How provocative 3Blue1Brown YouTube video titles arer=0.69yrs11
Take-Two Interactive Software's stock price (TTWO)r=-0.4822yrs6
Jet fuel used in Kosovor=0.5113yrs4
How provocative SciShow Space YouTube video titles arer=0.5810yrs-1
Capital One Financial's stock price (COF)r=-0.4722yrs-5
Gasoline pumped in Kosovor=0.4914yrs-8
How clickbait-y 3Blue1Brown YouTube video titles arer=0.579yrs-14
Fidelity National Information Services' stock price (FIS)r=-0.4722yrs-15
Ryanair Holdings' stock price (RYAAY)r=-0.4722yrs-25
Solar power generated in Chinar=-0.5432yrs-26
How cool CGP Grey YouTube video titles arer=0.5213yrs-27
Toyota Motor's stock price (TM)r=-0.4622yrs-36
Solar power generated in Gabonr=-0.7710yrs-36
Total views on CGP Grey YouTube videosr=0.5213yrs-37
Charter Communications' stock price (CHTR)r=-0.5614yrs-46
Wind power generated in Jordanr=-0.5432yrs-46
How clickbait-y 'Be Smart' science YouTube video titles arer=0.5211yrs-49
Autodesk's stock price (ADSK)r=-0.4622yrs-56
Wind power generated in Chinar=-0.5332yrs-58
Corning's stock price (GLW)r=-0.4622yrs-66
Solar power generated in Estoniar=-0.7113yrs-68
Solar power generated in Eswatinir=-0.7212yrs-78
Wind power generated in Norwayr=-0.5530yrs-88
Biomass power generated in South Korear=-0.5827yrs-98
Solar power generated in Swedenr=-0.5629yrs-108


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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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