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Data source: Bureau of Larbor Statistics
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The number of librarians in Massachusetts correlates with...

VariableCorrelationYearsSys. Score
US household spending on tobacco products and smoking suppliesr=0.9116yrs368
Popularity of the first name Janayr=0.8816yrs332
Average views of Numberphile YouTube videosr=0.958yrs322
Pirate attacks globallyr=0.9310yrs320
Electricity generation in Netherlands Antillesr=0.8716yrs304
Popularity of the 'planking' memer=0.918yrs303
Popularity of the first name Kalinr=0.8716yrs301
Google searches for 'life insurance quotes'r=0.8515yrs300
Electricity generation in Antarcticar=0.8812yrs282
Renewable energy production in Antarcticar=0.8812yrs282
Total length of LEMMiNO YouTube videosr=0.857yrs262
Popularity of the first name Adrienner=0.8216yrs188
Asthma attacks in American childrenr=0.8216yrs174
Milk consumptionr=0.7516yrs168
Asthma prevalence in American childrenr=0.7816yrs168
US average dairy skim-solid content of frozen dairy productsr=0.8116yrs166
The number of movies Drew Barrymore appeared inr=0.7416yrs166
Annual US household spending on transportationr=-0.8816yrs165
Fossil fuel use in Netherlands Antillesr=0.8416yrs164
The average age of batters for the Boston Red Soxr=0.7916yrs164
US average dairy skim-solid content of whey products (net)r=0.7916yrs162
Popularity of the first name Adrianner=0.8216yrs158
Bachelor's degrees awarded in Communications technologiesr=0.857yrs154
Fossil fuel use in Belgiumr=0.8216yrs152
Bachelor's degrees awarded in Theology and religious vocationsr=0.847yrs152
Bankruptcy filings in the USr=0.7416yrs149
Burglary rates in the USr=0.7316yrs149
US birth rates of triplets or morer=0.7216yrs148
Bachelor's degrees awarded in Visual and performing artsr=0.87yrs146
Burglaries in Massachusettsr=0.7116yrs146
Robberies in Massachusettsr=0.7116yrs146
Google searches for 'report UFO sighting'r=0.715yrs144
Popularity of the 'im on a boat' memer=0.7213yrs144
How fun AsapSCIENCE YouTube video titles arer=0.777yrs144
Cigarette Smoking Rate for US adultsr=0.7416yrs143
GMO use in cottonr=0.7216yrs143
The distance between Neptune and Saturnr=0.7316yrs143
Air pollution in Worcester, Massachusettsr=0.7216yrs143
Gasoline pumped in North Macedoniar=0.8416yrs142
Google searches for 'xbox'r=0.7315yrs142
US household spending on processed fruitsr=0.7316yrs142
The number of movies Richard Gere appeared inr=0.6816yrs142
Viewership count of American Idol Season Finaler=0.6916yrs140
Google searches for 'shook'r=0.7215yrs140
The distance between Neptune and Earthr=0.7116yrs140
The distance between Neptune and the moonr=0.7116yrs140
NASA's budget appropriationr=0.6616yrs137
Philip Morris International's stock price (PM)r=-0.9610yrs137
Movie Releases in the US & Canadar=-0.8616yrs136
GMO use in cottonr=0.6716yrs136
xkcd comics published about childhoodr=0.6812yrs136
Air pollution in Springfield, Massachusettsr=0.6716yrs136
North American digital comic sales volumer=-0.9410yrs135
US production of fluid beverage milkr=0.7516yrs130
Popularity of the first name Uniquer=0.8116yrs127
Popularity of the first name Destinr=0.8116yrs117
US average milk-fat content of milk fat and skim solids byproduct fluid beverage milkr=0.7516yrs116
How trendy AsapSCIENCE YouTube video titles arer=0.777yrs114
Arson in Massachusettsr=0.6816yrs112
Renewable energy production in Comorosr=0.8116yrs110
Google searches for 'oprah winfrey'r=0.7215yrs110
The distance between Neptune and the Sunr=0.716yrs108
Popularity of the first name Caylinr=0.816yrs106
Worldwide Harry Potter Movies Revenuer=0.739yrs106
US household spending on natural gasr=0.6916yrs106
US average dairy skim-solid content of whey products (net)r=0.7416yrs105
How provocative Tom Scott's YouTube video titles arer=0.7310yrs102
Hydopower energy generated in Comorosr=0.8116yrs100
Popularity of the first name Caleighr=0.816yrs96
Google searches for 'xkcd'r=0.7112yrs96
US household spending on vehicle insurancer=0.6916yrs96
The distance between Uranus and the Sunr=0.6716yrs94
Total comments on CGP Grey YouTube videosr=0.748yrs91
Fossil fuel use in Azerbaijanr=-0.8916yrs88
Popularity of the first name Edwardr=0.7916yrs84
Swiss cheese consumptionr=0.716yrs84
Hydopower energy generated in Puerto Ricor=0.816yrs78
Popularity of the first name Alisonr=0.7916yrs74
US dairy skim solids used to produce milk fat and skim solids byproduct fluid beverage milkr=0.7416yrs72
Hydopower energy generated in Azerbaijanr=0.7816yrs66
Popularity of the first name Janaer=0.7916yrs64
Cottage cheese consumptionr=0.6516yrs57
Liquefied petroleum gas used in U.S. Virgin Islandsr=0.816yrs56
Popularity of the first name Abbigailr=0.7916yrs54
Popularity of the first name Roxannar=0.7916yrs44
Gasoline pumped in Moldovar=0.7916yrs44
Ice cream consumptionr=0.6316yrs44
Popularity of the first name Collinr=0.7816yrs32
Fossil fuel use in Lithuaniar=0.7516yrs31
Popularity of the first name Whitneyr=0.7816yrs22
Fossil fuel use in Luxembourgr=0.7516yrs21
Popularity of the first name Jillianr=0.7816yrs12
Liquefied petroleum gas used in Syriar=0.7716yrs11
Popularity of the first name Sashar=0.7816yrs2
Gasoline pumped in Greecer=0.7516yrs-2
Popularity of the first name Brennenr=0.7816yrs-8
Kerosene used in Indiar=0.7516yrs-12
Popularity of the first name Evanr=0.7716yrs-19
Liquefied petroleum gas used in Austriar=0.7416yrs-24
Popularity of the first name Connerr=0.7716yrs-29
Gasoline pumped in Montenegror=0.7913yrs-44


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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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