Top variables that correlate with Air quality in Greenville, North Carolina

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

Variable	Correlation	Years	Sys. Score
Google searches for 'i have the flu'	r=0.91	20yrs	394
Wind power generated in Latvia	r=0.93	26yrs	383
Hydopower energy generated in Greenland	r=0.91	23yrs	377
Biomass power generated in India	r=0.9	23yrs	376
US milk fat used to produce yogurt	r=0.91	22yrs	374
US dairy skim solids used to produce yogurt, nonfrozen	r=0.91	22yrs	373
How professional-sounding SmarterEveryDay YouTube video titles are	r=0.93	17yrs	358
GMO use in cotton	r=0.9	23yrs	357
US household spending on healthcare	r=0.91	23yrs	356
Gasoline pumped in Micronesia	r=0.93	22yrs	346
U.S. direct investment abroad	r=0.9	22yrs	344
Ticket prices at North American movie theaters	r=0.87	22yrs	342
US Wind Power Generation Capacity	r=0.86	23yrs	338
US production of cheese (other than cottage cheese)	r=0.87	22yrs	338
The number of physical therapists in North Carolina	r=0.88	20yrs	338
The number of dentists in North Carolina	r=0.86	19yrs	336
Global Net Sales for Walmart	r=0.88	17yrs	335
Google searches for 'tummy ache'	r=0.85	20yrs	335
The number of occupational therapists in North Carolina	r=0.86	20yrs	335
Economic output of Washington metro area	r=0.85	21yrs	334
GMO use in corn	r=0.9	24yrs	331
Solar power generated in Libya	r=0.94	12yrs	330
Annual US household spending on telephone services	r=0.9	23yrs	324
US household spending on health insurance	r=0.9	23yrs	324
Restaurant spending in North Carolina	r=0.87	24yrs	322
Annual US household spending on health insurance	r=0.89	23yrs	322
US household spending on rented dwellings	r=0.89	23yrs	322
GMO use in cotton in North Carolina	r=0.86	23yrs	321
Annual US household spending on rented dwellings	r=0.88	23yrs	321
Annual US household spending on healthcare	r=0.88	23yrs	321
US per-person consumption of bottled water	r=0.87	24yrs	320
Food spending in North Carolina	r=0.88	24yrs	320
Annual US household spending on fresh fruits	r=0.87	23yrs	320
US household spending on fresh fruits	r=0.87	23yrs	320
Grocery store spend in North Carolina	r=0.87	24yrs	319
Annual US household spending on fresh vegetables	r=0.86	23yrs	318
US production of whey products (net)	r=0.87	22yrs	308
Electricity generation in Kazakhstan	r=0.89	30yrs	301
US production of sour cream	r=0.87	22yrs	298
US Bottled Water Consumption per Person	r=0.87	24yrs	296
Solar power generated in Germany	r=0.88	31yrs	290
US milk fat used to produce cheese (excluding cottage cheese)	r=0.87	22yrs	288
Wind power generated in Switzerland	r=0.9	26yrs	278
US milk fat used to produce sour cream	r=0.87	22yrs	278
Wind power generated in France	r=0.87	29yrs	267
US production of yogurt, nonfrozen	r=0.86	22yrs	267
Annual US household spending on fruits and vegetables	r=0.85	23yrs	266
Annual US household spending on property taxes	r=0.85	23yrs	261
Biomass power generated in Indonesia	r=0.87	29yrs	257
US dairy skim solids used to produce cheese (other than cottage cheese)	r=0.87	22yrs	257
Annual US household spending on utilities	r=0.85	23yrs	256
Customer satisfaction with Dillard's	r=0.81	27yrs	251
Annual US household spending on education	r=0.86	21yrs	251
Fomento Econ's stock price (FMX)	r=0.84	22yrs	249
Colgate-Palmolive Company's stock price (CL)	r=0.83	22yrs	248
Dominion Energy's stock price (D)	r=0.83	22yrs	248
Biomass power generated in Ireland	r=0.87	29yrs	247
US dairy skim solids used to produce whey products	r=0.87	22yrs	247
Google searches for 'i have a headache'	r=0.82	20yrs	246
Automotive recalls for issues with the Electrical System	r=0.68	41yrs	244
Automotive recalls issued by BMW of North America	r=0.64	41yrs	242
Customer satisfaction with Southwest Airlines	r=0.74	28yrs	242
Total number of automotive recalls	r=0.64	41yrs	240
Biomass power generated in Slovakia	r=0.87	29yrs	237
US dairy skim solids used to produce sour cream	r=0.87	22yrs	237
Automotive recalls for issues with the Power Train	r=0.63	41yrs	236
Number of Lawyers in the United States	r=0.74	34yrs	234
Popularity of the 'red pill blue pill' meme	r=0.85	18yrs	234
Annual Revenue of Walt Disney Company	r=0.78	32yrs	233
Inflation in the US	r=0.8	31yrs	232
Yearly Total Gross Income of US Farms	r=0.84	23yrs	232
Intel Corporation's annual revenue	r=0.75	36yrs	230
Number of websites on the internet	r=0.78	28yrs	230
Renewable energy production in Cabo Verde	r=0.86	29yrs	226
US production of butter	r=0.85	22yrs	226
Wind power generated in Canada	r=0.86	30yrs	216
US milk fat used to produce butter	r=0.85	22yrs	216
Realty Income's stock price (O)	r=0.82	22yrs	216
Wind power generated in Japan	r=0.86	30yrs	206
Cognizant Technology Solutions' stock price (CTSH)	r=0.82	22yrs	206
US dairy skim solids used to produce butter	r=0.85	22yrs	204
The number of lawyers in North Carolina	r=0.85	20yrs	200
Wind power generated in New Zealand	r=0.85	30yrs	195
Novartis AG's stock price (NVS)	r=0.81	22yrs	194
Hispanic cheese consumption	r=0.88	26yrs	192
Gasoline pumped in Bhutan	r=0.88	27yrs	184
Enbridge's stock price (ENB)	r=0.81	22yrs	184
Number of internet users	r=0.81	24yrs	180
PPG Industries' stock price (PPG)	r=0.81	22yrs	174
Sales of LP/Vinyl Albums	r=0.72	30yrs	173
Wind power generated in Czechia	r=0.89	22yrs	173
US average milk-fat content of yogurt, nonfrozen	r=0.9	22yrs	170
Christmas Price Index in the United States	r=0.77	31yrs	168
Biomass power generated in Zambia	r=0.89	22yrs	163
Biogen's stock price (BIIB)	r=0.8	22yrs	163
US average dairy skim-solid content of yogurt, nonfrozen	r=0.89	22yrs	158
ONEOK's stock price (OKE)	r=0.8	22yrs	153
Wind power generated in Taiwan	r=0.88	22yrs	152
Portion of all US dairy skim-solids allocated to the production of cheese (other than cottage cheese)	r=0.87	22yrs	147
US average milk-fat content of cheese (other than cottage cheese)	r=0.87	22yrs	136
US average dairy skim-solid content of fluid beverage milk	r=0.87	22yrs	126

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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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