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Data source: Environmental Protection Agency
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Air quality in New York City correlates with...

VariableCorrelationYearsHas img?
Google searches for 'buy a house'r=0.9720yrsNo
Google searches for 'i have a headache'r=0.9620yrsYes!
Gasoline pumped in Thailandr=0.9542yrsNo
The Coca-Cola Company's stock price (KO)r=0.9122yrsNo
Average milk produced per cow in the USr=0.9143yrsNo
Automotive recalls for issues with the Electrical Systemr=0.8943yrsYes!
Automotive recalls issued by BMW of North Americar=0.8143yrsYes!
UFO sightings in New Yorkr=0.6842yrsNo


Air quality in New York City also correlates with...

VariableCorrelationYearsSys. Score
The Walt Disney Company's stock price (DIS)r=0.9122yrs399
Ross Stores' stock price (ROST)r=0.9422yrs399
Gasoline pumped in Lebanonr=0.9542yrs399
Hydopower energy generated in Turkiyer=0.9242yrs398
Total likes of Tom Scott's YouTube videosr=0.9315yrs396
Total length of SmarterEveryDay YouTube videosr=0.9117yrs396
Total length of Steve Mould's YouTube videosr=0.9315yrs396
USA Populationr=0.943yrs394
US Wind Power Generation Capacityr=0.9523yrs382
Popularity of the 'red pill blue pill' memer=0.9318yrs381
Total number of automotive recallsr=0.8543yrs378
Google searches for 'no cap'r=0.9420yrs378
The number of sonographers in New Yorkr=0.9420yrs378
Popularity of the first name Ceciliar=0.9343yrs377
Popularity of the first name Aspenr=0.9343yrs377
Ticket prices at North American movie theatersr=0.922yrs376
Cost to send a letter via the USPSr=0.9117yrs376
Popularity of the first name Josier=0.9243yrs376
xkcd comics published about sciencer=0.9117yrs376
Global annual electricity generationr=0.9318yrs374
Annual Revenue of the Lego Groupr=0.9220yrs374
US production of cheese (other than cottage cheese)r=0.9122yrs374
US milk fat used to produce cheese (excluding cottage cheese)r=0.9122yrs374
Google's Advertising Revenuer=0.922yrs373
Google's annual advertising revenuer=0.922yrs373
The number of physician assistants in New Yorkr=0.9120yrs372
Global Net Sales for Walmartr=0.9217yrs371
The number of pest control workers in New Yorkr=0.920yrs371
Patents granted in the USr=0.941yrs370
Realty Income's stock price (O)r=0.9322yrs368
Gasoline pumped in Chiler=0.9443yrs368
Paypal's Number of Active Registered User Accountsr=0.9313yrs368
Revenue of US Broadcasting Industryr=0.917yrs368
Patents granted in the USr=0.8941yrs365
The average number of likes on Tom Scott's YouTube videosr=0.9115yrs364
US Annual Tax Revenuer=0.942yrs363
WEC Energy Group's stock price (WEC)r=0.9322yrs358
Gasoline pumped in Mauritiusr=0.9442yrs358
Annual US household spending on fruits and vegetablesr=0.9323yrs358
Annual US household spending on fresh fruitsr=0.9323yrs358
Annual US household spending on fresh vegetablesr=0.9323yrs358
Annual US household spending on processed vegetablesr=0.9323yrs358
Annual US household spending on healthcarer=0.9323yrs358
Annual US household spending on health insurancer=0.9323yrs358
CGI Inc.'s stock price (GIB)r=0.9322yrs348
Petroluem consumption in Turkiyer=0.9443yrs348
Google searches for 'tummy ache'r=0.9320yrs347
Popularity of the first name Emilior=0.9243yrs346
US dairy skim solids used to produce cheese (other than cottage cheese)r=0.9122yrs343
Google searches for 'i am dizzy'r=0.9320yrs337
SAP SE's stock price (SAP)r=0.9222yrs336
Total hydopower energy generated globallyr=0.9142yrs336
Popularity of the first name Khalilr=0.9243yrs336
Amgen's stock price (AMGN)r=0.9222yrs326
Total geothermal power generated globallyr=0.9142yrs326
Google searches for 'what is my zodiac sign'r=0.9220yrs326
Popularity of the first name Mylesr=0.9243yrs326
Average number of comments on SmarterEveryDay YouTube videosr=0.8917yrs322
The TJX Companies' stock price (TJX)r=0.9222yrs316
Electricity generation in Bruneir=0.9142yrs316
Popularity of the first name Ezequielr=0.9243yrs316
Google searches for 'how to go to space'r=0.920yrs312
The average number of likes on SmarterEveryDay YouTube videosr=0.8817yrs311
Ecolab's stock price (ECL)r=0.9222yrs306
Renewable energy production in Canadar=0.9142yrs306
Popularity of the first name Harrisonr=0.9143yrs304
Google searches for 'my cat scratched me'r=0.916yrs298
Brown-Forman's stock price (BF.A)r=0.9222yrs296
Renewable energy production in Chiler=0.9142yrs296
Popularity of the first name Sager=0.9143yrs294
Brown-Forman's stock price (BF.B)r=0.9222yrs286
Electricity generation in Colombiar=0.9142yrs286
Google searches for 'how to immigrate to canada'r=0.8920yrs286
Popularity of the first name Celiner=0.9143yrs284
Dollar Tree's stock price (DLTR)r=0.922yrs276
Electricity generation in Kenyar=0.9142yrs276
Popularity of the first name Aliar=0.9143yrs274
Church & Dwight Co.'s stock price (CHD)r=0.9222yrs266
Electricity generation in Turkiyer=0.9142yrs266
Popularity of the first name Elizar=0.943yrs262
Eversource Energy's stock price (ES)r=0.9222yrs256
Gasoline pumped in Israelr=0.9243yrs256
Popularity of the first name Layner=0.943yrs252
McCormick & Company's stock price (MKC)r=0.9222yrs246
Petroluem consumption in Lebanonr=0.9342yrs246
Popularity of the first name Aldenr=0.943yrs242
Hormel Foods' stock price (HRL)r=0.9222yrs236
Petroluem consumption in Malawir=0.9342yrs236
Popularity of the first name Treasurer=0.943yrs232
Gasoline pumped in South Korear=0.9243yrs226
Comcast's stock price (CMCSA)r=0.9122yrs224
HDFC Bank's stock price (HDB)r=0.9122yrs214
Fossil fuel use in Indiar=0.942yrs214
Starbucks' stock price (SBUX)r=0.9122yrs204
Fossil fuel use in Moroccor=0.942yrs204


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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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