Top variables that correlate with Air quality in Pittsburgh

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Data source: Environmental Protection Agency
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Air quality in Pittsburgh correlates with...

Variable	Correlation	Years	Has img?
Hydopower energy generated in Greenland	r=0.93	23yrs	Yes!
US household spending on fresh fruits	r=0.92	23yrs	No

Air quality in Pittsburgh also correlates with...

Variable	Correlation	Years	Sys. Score
Biomass power generated in India	r=0.94	23yrs	382
Wind power generated in Czechia	r=0.93	22yrs	379
Ticket prices at North American movie theaters	r=0.91	22yrs	378
U.S. direct investment abroad	r=0.92	22yrs	378
US production of dry milk products (net)	r=0.92	22yrs	376
Economic output of Washington metro area	r=0.91	21yrs	374
US production of cheese (other than cottage cheese)	r=0.91	22yrs	374
US milk fat used to produce cheese (excluding cottage cheese)	r=0.91	22yrs	374
Global Net Sales for Walmart	r=0.93	17yrs	372
Total Revenue of the NFL Teams	r=0.9	20yrs	371
GMO use in corn	r=0.93	24yrs	366
Google searches for 'i have the flu'	r=0.9	20yrs	362
Fomento Econ's stock price (FMX)	r=0.89	22yrs	362
Colgate-Palmolive Company's stock price (CL)	r=0.89	22yrs	362
GMO use in cotton	r=0.92	23yrs	360
Dominion Energy's stock price (D)	r=0.88	22yrs	360
US household spending on healthcare	r=0.94	23yrs	360
US household spending on rented dwellings	r=0.93	23yrs	358
US household spending on health insurance	r=0.93	23yrs	358
Annual US household spending on health insurance	r=0.92	23yrs	357
Annual US household spending on rented dwellings	r=0.91	23yrs	356
Annual US household spending on healthcare	r=0.91	23yrs	356
Annual US household spending on telephone services	r=0.9	23yrs	354
How professional-sounding SmarterEveryDay YouTube video titles are	r=0.9	17yrs	354
Wind power generated in Tunisia	r=0.92	22yrs	348
US milk fat used to produce yogurt	r=0.91	22yrs	344
US Wind Power Generation Capacity	r=0.89	23yrs	342
Google searches for 'tummy ache'	r=0.9	20yrs	342
Popularity of the 'red pill blue pill' meme	r=0.87	18yrs	342
Adidas Group's Global Net Sales	r=0.89	23yrs	340
Yearly Total Gross Income of US Farms	r=0.86	23yrs	340
The number of physical therapists in Pennsylvania	r=0.89	20yrs	340
Global annual electricity generation	r=0.9	18yrs	339
China's Annual Passenger Car Production	r=0.9	18yrs	339
Google searches for 'how to make baby'	r=0.87	20yrs	338
Biomass power generated in Lithuania	r=0.92	21yrs	336
The number of financial examiners in Pennsylvania	r=0.87	20yrs	336
The number of lawyers in Pennsylvania	r=0.86	20yrs	336
Annual Revenue of the Lego Group	r=0.86	20yrs	335
Revenue of US Broadcasting Industry	r=0.88	17yrs	335
US dairy skim solids used to produce dry milk products	r=0.92	22yrs	334
Cognizant Technology Solutions' stock price (CTSH)	r=0.88	22yrs	330
Biomass power generated in Papua New Guinea	r=0.91	22yrs	326
US dairy skim solids used to produce yogurt, nonfrozen	r=0.92	22yrs	324
Annual US household spending on fresh fruits	r=0.9	23yrs	324
US per-person consumption of bottled water	r=0.88	24yrs	322
Restaurant spending in Pennsylvania	r=0.87	24yrs	322
Annual US household spending on fresh vegetables	r=0.89	23yrs	322
How 'hip and with it' SmarterEveryDay YouTube video titles are	r=0.88	17yrs	321
How cool SmarterEveryDay YouTube video titles are	r=0.87	17yrs	320
Food spending in Pennsylvania	r=0.86	24yrs	318
Unilever's stock price (UL)	r=0.86	22yrs	317
Wind power generated in Taiwan	r=0.91	22yrs	316
US dairy skim solids used to produce cheese (other than cottage cheese)	r=0.91	22yrs	313
The number of veterinary technologists and technicians in Pennsylvania	r=0.87	20yrs	306
Solar power generated in Greece	r=0.92	18yrs	304
Muenster cheese consumption	r=0.92	27yrs	298
The number of compliance officers in Pennsylvania	r=0.91	13yrs	296
Biomass power generated in Zambia	r=0.9	22yrs	294
Petroluem consumption in Timor-Leste	r=0.94	19yrs	284
US average dairy skim-solid content of yogurt, nonfrozen	r=0.93	22yrs	274
Gasoline pumped in Micronesia	r=0.91	22yrs	273
Annual US household spending on fruits and vegetables	r=0.88	23yrs	271
Annual US household spending on poultry	r=0.87	23yrs	265
Biomass power generated in Solomon Islands	r=0.92	16yrs	262
US average milk-fat content of dry milk products (net)	r=0.91	22yrs	262
Annual US household spending on eggs	r=0.87	23yrs	260
Automotive recalls for issues with the Electrical System	r=0.76	43yrs	258
Annual US household spending on medical supplies	r=0.87	23yrs	255
Automotive recalls issued by Mercedes-Benz USA	r=0.7	43yrs	254
Gasoline pumped in Timor-Leste	r=0.92	19yrs	252
US Bottled Water Consumption per Person	r=0.89	24yrs	250
Automotive recalls issued by Volkswagen Group of America	r=0.68	43yrs	250
Automotive recalls issued by BMW of North America	r=0.67	43yrs	249
Automotive recalls issued by Porsche	r=0.67	43yrs	249
US production of butter	r=0.89	22yrs	242
Liquefied petroleum gas used in Maldives	r=0.92	18yrs	240
US production of whey products (net)	r=0.89	22yrs	232
US milk fat used to produce butter	r=0.89	22yrs	222
Liquefied petroleum gas used in Belgium	r=0.87	43yrs	218
US milk fat used to produce whey products (net)	r=0.89	22yrs	212
Petroluem consumption in Rwanda	r=0.86	42yrs	206
US milk fat used to produce dry milk products	r=0.89	22yrs	202
The Coca-Cola Company's stock price (KO)	r=0.83	22yrs	202
The Walt Disney Company's stock price (DIS)	r=0.83	22yrs	192
US production of sour cream	r=0.88	22yrs	190
Electricity generation in Kazakhstan	r=0.87	30yrs	188
US dairy skim solids used to produce butter	r=0.89	22yrs	180
Realty Income's stock price (O)	r=0.85	22yrs	180
Wind power generated in Switzerland	r=0.89	26yrs	177
US dairy skim solids used to produce whey products	r=0.89	22yrs	170
Biogen's stock price (BIIB)	r=0.85	22yrs	170
Renewable energy production in Cabo Verde	r=0.86	29yrs	166
Novartis AG's stock price (NVS)	r=0.84	22yrs	159
Wind power generated in France	r=0.86	29yrs	156
Cummins' stock price (CMI)	r=0.84	22yrs	149
PPG Industries' stock price (PPG)	r=0.84	22yrs	139
US average milk-fat content of cheese (other than cottage cheese)	r=0.89	22yrs	138
US average milk-fat content of yogurt, nonfrozen	r=0.89	22yrs	128

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^{What is Sys. Score?} 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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