Top variables that correlate with Air quality in Nashville

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

Variable	Correlation	Years	Sys. Score
Wind power generated in Czechia	r=0.96	22yrs	414
Biomass power generated in India	r=0.95	23yrs	413
Google searches for 'i have the flu'	r=0.92	20yrs	396
U.S. direct investment abroad	r=0.94	22yrs	380
Hydopower energy generated in Greenland	r=0.93	23yrs	380
US milk fat used to produce yogurt	r=0.94	22yrs	379
US production of butter	r=0.93	22yrs	378
US production of sour cream	r=0.93	22yrs	378
The number of interpreters and translators in Tennessee	r=0.94	20yrs	377
Total employee count at Continental AG	r=0.9	24yrs	376
Google searches for 'how to make baby'	r=0.91	20yrs	374
China's Annual Passenger Car Production	r=0.9	18yrs	369
GMO use in corn	r=0.94	24yrs	367
Fomento Econ's stock price (FMX)	r=0.9	22yrs	363
GMO use in cotton	r=0.93	23yrs	362
Annual US household spending on telephone services	r=0.94	23yrs	360
US household spending on rented dwellings	r=0.93	23yrs	358
US household spending on healthcare	r=0.93	23yrs	358
US household spending on health insurance	r=0.93	23yrs	358
Dominion Energy's stock price (D)	r=0.86	22yrs	357
US household spending on fresh fruits	r=0.91	23yrs	356
Annual US household spending on education	r=0.91	21yrs	354
Wind power generated in Taiwan	r=0.94	22yrs	350
US milk fat used to produce butter	r=0.93	22yrs	348
Ticket prices at North American movie theaters	r=0.88	22yrs	343
Economic output of Washington metro area	r=0.9	21yrs	342
Google searches for 'scooby doo where are you'	r=0.9	20yrs	342
Total Revenue of the NFL Teams	r=0.89	20yrs	340
The number of pharmacists in Tennessee	r=0.88	20yrs	340
US dairy skim solids used to produce yogurt, nonfrozen	r=0.94	22yrs	338
Biomass power generated in Zambia	r=0.92	22yrs	338
Adidas Group's Global Net Sales	r=0.88	23yrs	338
The number of clergy in Tennessee	r=0.88	20yrs	338
UK Service Retail Price Index	r=0.89	19yrs	337
US Wind Power Generation Capacity	r=0.85	23yrs	336
Global Net Sales for Walmart	r=0.87	17yrs	334
GMO use in corn	r=0.89	24yrs	330
US dairy skim solids used to produce butter	r=0.93	22yrs	326
Wind power generated in Falkland Islands	r=0.91	22yrs	326
Annual US household spending on health insurance	r=0.9	23yrs	324
US per-person consumption of bottled water	r=0.88	24yrs	322
Annual US household spending on rented dwellings	r=0.89	23yrs	322
How professional-sounding SmarterEveryDay YouTube video titles are	r=0.89	17yrs	322
Annual US household spending on fresh fruits	r=0.88	23yrs	321
Annual US household spending on utilities	r=0.88	23yrs	321
US Tree Nut Consumption per Person	r=0.88	22yrs	320
How cool SmarterEveryDay YouTube video titles are	r=0.87	17yrs	320
Biomass power generated in Rwanda	r=0.91	22yrs	316
US production of cheese (other than cottage cheese)	r=0.91	22yrs	314
Google searches for 'headache remedies'	r=0.88	20yrs	310
The number of building inspectors in Tennessee	r=0.88	20yrs	308
Biomass power generated in Slovenia	r=0.9	23yrs	306
US milk fat used to produce cheese (excluding cottage cheese)	r=0.91	22yrs	304
Jet fuel used in Sao Tome and Principe	r=0.93	22yrs	296
The number of consultants in Tennessee	r=0.87	20yrs	296
Google searches for 'how to make baby'	r=0.85	20yrs	295
US dairy skim solids used to produce cheese (other than cottage cheese)	r=0.92	22yrs	294
GMO use in cotton	r=0.88	23yrs	294
The number of physical therapists in Tennessee	r=0.87	20yrs	286
Biomass power generated in Lithuania	r=0.9	21yrs	284
GMO use in cotton in Tennessee	r=0.88	18yrs	279
The number of respiratory therapists in Tennessee	r=0.87	20yrs	276
Jet fuel used in Samoa	r=0.91	22yrs	273
Annual US household spending on healthcare	r=0.88	23yrs	271
Annual US household spending on pets, toys, and hobbies	r=0.88	23yrs	266
US average milk-fat content of yogurt, nonfrozen	r=0.92	22yrs	263
Gasoline pumped in Timor-Leste	r=0.92	19yrs	262
Annual US household spending on electricity	r=0.87	23yrs	260
US Bottled Water Consumption per Person	r=0.88	24yrs	258
US average dairy skim-solid content of cheese (other than cottage cheese)	r=0.92	22yrs	253
Annual US household spending on fresh vegetables	r=0.86	23yrs	253
Biomass power generated in Solomon Islands	r=0.91	16yrs	250
Customer satisfaction with Southwest Airlines	r=0.8	28yrs	250
RTX Corp's stock price (RTX)	r=0.84	22yrs	249
Annual US household spending on property taxes	r=0.86	23yrs	248
Portion of all US dairy skim-solids allocated to the production of cheese (other than cottage cheese)	r=0.9	22yrs	242
Annual US household spending on fruits and vegetables	r=0.85	23yrs	241
Liquefied petroleum gas used in Maldives	r=0.91	18yrs	239
US average milk-fat content of cheese (other than cottage cheese)	r=0.91	22yrs	232
US average dairy skim-solid content of fluid beverage milk	r=0.9	22yrs	220
Enbridge's stock price (ENB)	r=0.84	22yrs	219
US average dairy skim-solid content of yogurt, nonfrozen	r=0.9	22yrs	210
Altria Group's stock price (MO)	r=0.83	22yrs	208
Biomass power generated in Papua New Guinea	r=0.9	22yrs	204
Colgate-Palmolive Company's stock price (CL)	r=0.83	22yrs	198
US production of yogurt, nonfrozen	r=0.9	22yrs	193
Biomass power generated in Malawi	r=0.88	22yrs	192
Rogers Communications' stock price (RCI)	r=0.83	22yrs	188
US milk fat used to produce sour cream	r=0.9	22yrs	183
Biomass power generated in Mozambique	r=0.88	22yrs	182
Unilever's stock price (UL)	r=0.82	22yrs	176
US production of dry milk products (net)	r=0.89	22yrs	172
Gasoline pumped in Micronesia	r=0.9	22yrs	172
Realty Income's stock price (O)	r=0.82	22yrs	166
US milk fat used to produce whey products (net)	r=0.89	22yrs	162
Wind power generated in Tunisia	r=0.87	22yrs	160
Cognizant Technology Solutions' stock price (CTSH)	r=0.82	22yrs	156
US dairy skim solids used to produce sour cream	r=0.9	22yrs	152
Wind power generated in Bulgaria	r=0.89	18yrs	149
Kellogg's stock price (K)	r=0.82	22yrs	146
Novartis AG's stock price (NVS)	r=0.81	22yrs	134

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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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