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Data source: Environmental Protection Agency
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Air pollution in Worcester, Massachusetts correlates with...

VariableCorrelationYearsSys. Score
Number of edits to the Wikipedia article for Thanksgivingr=0.9416yrs398
Lloyds Banking Group's stock price (LYG)r=0.8822yrs360
Citigroup's stock price (C)r=0.8722yrs358
AIG's stock price (AIG)r=0.8722yrs358
Physical album shipment volume in the United Statesr=0.8724yrs340
The number of psychiatric aides in Massachusettsr=0.8819yrs337
The number of payroll and timekeeping clerks in Massachusettsr=0.8720yrs336
The number of file clerks in Massachusettsr=0.8720yrs336
GMO use in cottonr=0.8923yrs326
The number of sewing machine operators in Massachusettsr=0.8720yrs306
The number of postal service machine operators in Massachusettsr=0.8620yrs295
The number of paper goods machine setters, operators, and tenders in Massachusettsr=0.8620yrs285
Hydopower energy generated in Denmarkr=0.842yrs244
Petroluem consumption in Italyr=0.7843yrs240
Kerosene used in Central African Republicr=0.8235yrs238
US Employment Rater=0.7733yrs230
NASA's budget as a percentage of the total US Federal Budgetr=0.6644yrs230
Remaining Forest Cover in the Brazilian Amazonr=0.6936yrs226
Ice cream consumptionr=0.8432yrs226
US milk fat used to produce fluid beverage milkr=0.8222yrs226
Google searches for 'learn spanish'r=0.8220yrs226
Motor vehicle theftsr=0.6638yrs226
U.S. intercountry adoptionsr=0.7923yrs222
Sherbet consumptionr=0.832yrs220
Popularity of the first name Rolandor=0.7843yrs220
Emmy Awards Ceremony viewershipr=0.6736yrs218
Popularity of the first name Mariar=0.7643yrs216
Popularity of the first name Ajar=0.7643yrs216
The distance between Neptune and the Sunr=0.744yrs212
The distance between Neptune and the moonr=0.744yrs212
The distance between Neptune and Earthr=0.6944yrs210
Petroluem consumption in Denmarkr=0.7743yrs208
Total value of all $1 bills printedr=0.7333yrs208
Violent crime ratesr=0.638yrs206
US household spending on clothin for womenr=0.823yrs204
US household spending on prescription drugsr=0.823yrs204
US household spending on booksr=0.823yrs204
US household spending on clothingr=0.7923yrs202
US household spending on clothing for menr=0.7923yrs202
Automotive recalls for issues with Vehicle Speed Controlr=0.5643yrs198
US birth rates of triplets or morer=0.7920yrs197
Petroluem consumption in Swedenr=0.7643yrs196
Total number of automotive recallsr=-0.6843yrs194
Google searches for 'snoop dog'r=0.8120yrs194
Arson in United Statesr=0.6538yrs194
Automotive recalls for issues with the Electrical Systemr=-0.6943yrs193
Customer satisfaction with Appler=-0.8128yrs192
Automotive recalls for issues with the Power Trainr=-0.6743yrs191
Automotive recalls issued by BMW of North Americar=-0.6243yrs190
Popularity of the first name Sommerr=0.7643yrs186
Nuclear power generation in Germanyr=0.7931yrs182
Milk consumptionr=0.7332yrs182
Sumitomo Mitsui Financial Group's stock price (SMFG)r=0.8120yrs181
The distance between Neptune and Mercuryr=0.6744yrs177
Popularity of the first name Cindyr=0.7543yrs175
Petroluem consumption in Germanyr=0.832yrs172
The number of prepress technicians and workers in Massachusettsr=0.8520yrs168
Orange's stock price (ORAN)r=0.7722yrs168
Popularity of the first name Ramonr=0.7543yrs165
Portion of all US dairy skim-solids allocated to the production of fluid beverage milkr=0.8322yrs164
Gasoline pumped in Germanyr=0.832yrs162
Barclays' stock price (BCS)r=0.7622yrs157
The number of postal service mail carriers in Massachusettsr=0.8320yrs156
Popularity of the first name Kennyr=0.7543yrs155
Portion of all US dairy skim-solids allocated to the production of frozen dairy productsr=0.8222yrs153
Kerosene used in Japanr=0.7343yrs152
The number of furniture finishers in Massachusettsr=0.8320yrs146
Popularity of the first name Brookr=0.7543yrs145
US average milk-fat content of frozen dairy productsr=0.8222yrs143
Kerosene used globallyr=0.7342yrs141
The number of postmasters in Massachusettsr=0.8220yrs134
Popularity of the first name Marior=0.7443yrs134
US average milk-fat content of cottage cheeser=0.8222yrs133
Petroluem consumption in Antarcticar=0.7242yrs130
The number of switchboard operators in Massachusettsr=0.8220yrs124
Popularity of the first name Robertor=0.7443yrs124
Gasoline pumped in Norwayr=0.7243yrs120
Popularity of the first name Claudiar=0.7443yrs114
Average milk produced per cow in the USr=-0.6743yrs114
Gasoline pumped in Sloveniar=0.7931yrs109
Popularity of the first name Rubenr=0.7443yrs104
Fossil fuel use in Hungaryr=0.6942yrs98
Popularity of the first name Alissar=0.7443yrs94
Fossil fuel use in Slovakiar=0.7829yrs88
Popularity of the first name Tommyr=0.7443yrs84
The number of floral designers in Massachusettsr=0.8220yrs84
Gasoline pumped in Latviar=0.7831yrs78
Popularity of the first name Arlener=0.7443yrs74
The number of CEOs in Massachusettsr=0.8119yrs73
Kerosene used in Montserratr=0.7635yrs68
Popularity of the first name Heribertor=0.7443yrs64
The number of bill collectors in Massachusettsr=0.820yrs62
Gasoline pumped in United Kingdomr=0.743yrs58
Popularity of the first name Lourdesr=0.7443yrs54
The number of boiler operators in Massachusettsr=0.8120yrs52
Petroluem consumption in Francer=0.6943yrs46
Popularity of the first name Erikr=0.7343yrs42
The number of telemarketers in Massachusettsr=0.7820yrs40
Liquefied petroleum gas used in Greenlandr=0.8322yrs36
Popularity of the first name Leslier=0.7343yrs32
Popularity of the first name Raulr=0.7343yrs22


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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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