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Data source: Environmental Protection Agency
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Air quality in Winston, North Carolina correlates with...

VariableCorrelationYearsSys. Score
Biomass power generated in Indiar=0.9523yrs383
Hydopower energy generated in Greenlandr=0.9423yrs382
U.S. direct investment abroadr=0.9322yrs379
Wind power generated in Czechiar=0.9322yrs379
Ticket prices at North American movie theatersr=0.9122yrs378
US Wind Power Generation Capacityr=0.9323yrs378
US production of cheese (other than cottage cheese)r=0.9222yrs376
US production of dry milk products (net)r=0.9222yrs376
US production of sour creamr=0.9222yrs376
The number of physical therapists in North Carolinar=0.9320yrs376
The number of medical assistants in North Carolinar=0.9220yrs374
The number of clergy in North Carolinar=0.9120yrs372
Global Net Sales for Walmartr=0.9217yrs371
Global annual electricity generationr=0.918yrs369
GMO use in cornr=0.9124yrs362
Google searches for 'i have the flu'r=0.920yrs362
Realty Income's stock price (O)r=0.8922yrs362
The Walt Disney Company's stock price (DIS)r=0.8522yrs360
Cognizant Technology Solutions' stock price (CTSH)r=0.8822yrs360
US household spending on healthcarer=0.9423yrs360
GMO use in cottonr=0.9123yrs358
Annual US household spending on fresh fruitsr=0.9323yrs358
Annual US household spending on rented dwellingsr=0.9323yrs358
Annual US household spending on healthcarer=0.9323yrs358
Annual US household spending on health insurancer=0.9323yrs358
US household spending on fresh fruitsr=0.9323yrs358
US household spending on rented dwellingsr=0.9323yrs358
US household spending on health insurancer=0.9323yrs358
Annual US household spending on telephone servicesr=0.9223yrs357
US per-person consumption of bottled waterr=0.9124yrs356
Google searches for 'i have a headache'r=0.8620yrs356
Annual US household spending on fruits and vegetablesr=0.9123yrs356
US Tree Nut Consumption per Personr=0.922yrs353
Wind power generated in Taiwanr=0.9322yrs349
US milk fat used to produce cheese (excluding cottage cheese)r=0.9222yrs346
Total employee count at Continental AGr=0.8824yrs344
Popularity of the 'red pill blue pill' memer=0.8718yrs342
Adidas Group's Global Net Salesr=0.923yrs341
Google searches for 'tummy ache'r=0.8920yrs341
Economic output of Washington metro arear=0.8921yrs340
Annual Revenue of the Lego Groupr=0.8920yrs340
Biomass power generated in Zambiar=0.9322yrs339
Yearly Total Gross Income of US Farmsr=0.8523yrs338
Total Revenue of the NFL Teamsr=0.8720yrs336
US dairy skim solids used to produce cheese (other than cottage cheese)r=0.9222yrs334
US Bottled Water Consumption per Personr=0.9124yrs332
Biomass power generated in Lithuaniar=0.9321yrs328
Dominion Energy's stock price (D)r=0.8722yrs328
US dairy skim solids used to produce dry milk productsr=0.9222yrs324
Biomass power generated in Papua New Guinear=0.9222yrs318
Chunghwa Telecom Co.'s stock price (CHT)r=0.8820yrs318
US production of butterr=0.922yrs313
Google searches for 'buy a house'r=0.8920yrs311
The number of pharmacists in North Carolinar=0.8820yrs310
Colgate-Palmolive Company's stock price (CL)r=0.8622yrs307
Annual US household spending on fresh vegetablesr=0.9123yrs306
US milk fat used to produce butterr=0.922yrs303
Gasoline pumped in Micronesiar=0.9122yrs303
The number of occupational therapists in North Carolinar=0.8920yrs300
Equity Residential's stock price (EQR)r=0.8622yrs297
Google searches for 'who is jk rowling'r=0.8520yrs295
US dairy skim solids used to produce yogurt, nonfrozenr=0.9122yrs293
Solar power generated in Belgiumr=0.9118yrs292
The number of respiratory therapists in North Carolinar=0.8920yrs290
China's Annual Passenger Car Productionr=0.918yrs289
SAP SE's stock price (SAP)r=0.8522yrs286
Google searches for 'smol'r=0.8520yrs285
US dairy skim solids used to produce butterr=0.922yrs282
Wind power generated in Lithuaniar=0.9118yrs282
The number of dentists in North Carolinar=0.8919yrs280
Revenue of US Broadcasting Industryr=0.8817yrs280
Wind power generated in Bulgariar=0.918yrs270
The number of OSHA specialists in North Carolinar=0.919yrs270
The number of industrial engineers in North Carolinar=0.8820yrs258
US average dairy skim-solid content of yogurt, nonfrozenr=0.9322yrs254
The number of registered nurses in North Carolinar=0.8918yrs248
US average milk-fat content of cheese (other than cottage cheese)r=0.9122yrs242
The number of consultants in North Carolinar=0.8720yrs236
Wind power generated in Tunisiar=0.922yrs234
US average dairy skim-solid content of cheese (other than cottage cheese)r=0.922yrs230
The number of mechanical engineers in North Carolinar=0.8720yrs226
Wind power generated in Falkland Islandsr=0.8822yrs222
The number of lawyers in North Carolinar=0.8620yrs216
US milk fat used to produce yogurtr=0.922yrs213
Biomass power generated in Latviar=0.8921yrs212
The number of physician assistants in North Carolinar=0.8720yrs206
Biomass power generated in Mozambiquer=0.8822yrs202
US production of whey products (net)r=0.8722yrs198
The number of dental hygienists in North Carolinar=0.8720yrs196
Solar power generated in Greecer=0.918yrs190
US milk fat used to produce sour creamr=0.8622yrs187
The number of pharmacy technicians in North Carolinar=0.8720yrs186
Biomass power generated in Malawir=0.8722yrs180
US dairy skim solids used to produce whey productsr=0.8722yrs177
The number of pest control workers in North Carolinar=0.8720yrs176
Biomass power generated in Rwandar=0.8722yrs170
US dairy skim solids used to produce sour creamr=0.8622yrs166
The number of animal trainers in North Carolinar=0.8720yrs166
Solar power generated in Luxembourgr=0.8621yrs158
The number of statisticians in North Carolinar=0.8520yrs155
Wind power generated in Moroccor=0.8622yrs148


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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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