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Data source: Bureau of Larbor Statistics
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The number of janitors and cleaners in New York correlates with...

VariableCorrelationYearsSys. Score
Global Apple iPhone Sales in Q3r=0.9412yrs369
Viewership of "The Big Bang Theory"r=0.9112yrs339
Biomass power generated in United Statesr=0.8619yrs336
Jet fuel used in Norwayr=0.8720yrs335
Number of International Tourist Arrivals Worldwider=0.8520yrs334
Jet fuel used in Dominican Republicr=0.8719yrs334
Master's degrees awarded in Visual and performing artsr=0.9210yrs317
Amazon's Annual Outbound Shipping Expenditure in Millionsr=0.911yrs309
Jet fuel used in Surinamer=0.8719yrs304
Number of internet usersr=0.8614yrs302
How insightful Technology Connections YouTube video titles arer=0.918yrs302
Jet fuel used in Thailandr=0.8619yrs292
Amazon's shipping revenue in millions of dollarsr=0.8811yrs276
Bachelor's degrees awarded in consumer sciencesr=0.8610yrs263
Global sales revenue of elevators and escalatorsr=0.887yrs262
Global revenue from elevator and escalator salesr=0.887yrs257
Popularity of the first name Ahmedr=0.8220yrs222
Passenger traffic at Hartsfield-Jackson Atlanta International Airportr=0.7820yrs194
Google searches for 'movie theater showtimes'r=0.819yrs192
Number of public school students in 3rd grader=0.7620yrs188
Popularity of the first name Abdullahr=0.7720yrs185
Jet fuel used in Switzerlandr=0.8520yrs177
Visitors to Disney Worlds Magic Kingdomr=0.8215yrs169
UK Service Retail Price Indexr=0.8216yrs168
Visitors to Disneylandr=0.8115yrs168
Number of websites on the internetr=0.7716yrs167
Google searches for 'best schools'r=0.7719yrs167
Movie Releases in the US & Canadar=0.7520yrs166
Number of times 7 was a winning Mega Millions numberr=0.7618yrs166
Popularity of the 'i dont always' memer=0.7417yrs166
Jet fuel used in Australiar=0.8320yrs164
Number of Movies Released Annuallyr=0.7520yrs164
US household spending on public transportationr=0.7520yrs164
Number of public school students in 4th grader=0.7220yrs162
Popularity of the first name Lydiar=0.7520yrs162
The marriage rate in New Yorkr=0.7419yrs161
Number of times 1 was a winning Mega Millions numberr=0.7218yrs160
US kids in public schoolr=0.720yrs159
Google searches for 'how much wood can a woodchuck chuck'r=0.7119yrs158
Golden State Warriors' Seasonal Total Winsr=0.720yrs156
Customer satisfaction with NYTimes.comr=0.719yrs156
Jet fuel used in Boliviar=0.8419yrs154
Master's degrees awarded in Architecturer=0.8310yrs154
Annual US household spending on public transportationr=0.6820yrs153
How geeky SciShow Space YouTube video titles arer=0.819yrs152
Average length of LockPickingLawyer YouTube videosr=0.818yrs152
Popularity of the 'chuck norris' memer=0.6717yrs141
Number of times 5 was a winning Mega Millions numberr=0.6718yrs138
Customer satisfaction with Dillard'sr=0.6818yrs138
Number of times 9 was a winning Mega Millions numberr=0.6618yrs136
Automotive recalls issued by Toyotar=0.6420yrs136
Global Box Office Revenue of UK Filmsr=0.7120yrs132
Popularity of the first name Camiller=0.7520yrs132
Bachelor's degrees awarded in Theology and religious vocationsr=0.8210yrs122
Popularity of the first name Alir=0.7420yrs120
Jet fuel used in Argentinar=0.8319yrs113
Average length of Deep Look YouTube videosr=-0.979yrs113
Super Bowl TV viewershipr=0.7120yrs112
Google searches for 'batman'r=0.6819yrs112
Popularity of the first name Abramr=0.7320yrs109
The number of movies Jennifer Lawrence appeared inr=0.7115yrs105
Annual count of part-time employees in the United Statesr=0.7220yrs104
Jet fuel used in Brazilr=0.8319yrs103
Master's degrees awarded in gender studiesr=0.7510yrs102
How good LockPickingLawyer YouTube video titles arer=0.748yrs101
Google searches for 'cute cats'r=0.6919yrs100
Load Factor of US Carrier Flightsr=0.7219yrs98
Popularity of the first name Kennedyr=0.7120yrs96
Gasoline pumped in Chadr=0.8219yrs92
How clickbait-y SciShow Space YouTube video titles arer=0.739yrs90
The number of movies James Franco appeared inr=0.6420yrs90
Canadian Carbon Dioxide Emissionsr=0.6919yrs89
Google searches for 'im not even mad'r=0.6819yrs88
Popularity of the first name Fionar=0.7120yrs86
Master's degrees awarded in Physical sciencesr=0.7110yrs86
Jet fuel used in Perur=0.8219yrs82
How provocative SciShow Space YouTube video titles arer=0.729yrs79
Number of Public Library Members in the UKr=0.7912yrs78
Google searches for 'matt levine'r=0.6719yrs77
Popularity of the first name Gerardr=0.7120yrs76
Number of films featuring Tom Hanksr=0.6420yrs76
Jet fuel used in Philippinesr=0.8219yrs72
Amount spent on Pet Gifts on Valentine's Day in the USr=0.759yrs69
How fun SciShow Space YouTube video titles arer=0.719yrs68
Google searches for 'numberphile'r=0.6719yrs67
Popularity of the first name Gretar=0.7120yrs66
Jet fuel used in Saudi Arabiar=0.8219yrs62
Popularity of the first name Reaganr=0.720yrs54
Jet fuel used in Indonesiar=0.819yrs48
Popularity of the first name Reedr=0.720yrs44
Jet fuel used in Panamar=0.819yrs38
Popularity of the first name Gunnarr=0.720yrs34
Gasoline pumped in Saint Luciar=0.819yrs28
Popularity of the first name Marshallr=0.6920yrs23
Kerosene used in Venezuelar=0.819yrs18
Popularity of the first name Mohammedr=0.6920yrs13
Jet fuel used in Singaporer=0.7819yrs6
Popularity of the first name Skylarr=0.6820yrs2
Popularity of the first name Mariamr=0.6820yrs-8
Popularity of the first name Aubreer=0.6820yrs-18
Geothermal power generated in Austriar=-0.8916yrs-22


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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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