Top variables that correlate with The number of optometrists in Iowa

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Data source: Bureau of Larbor Statistics
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The number of optometrists in Iowa correlates with...

Variable	Correlation	Years	Sys. Score
Average length of SciShow Space YouTube videos	r=0.95	9yrs	374
Total length of SciShow Space YouTube videos	r=0.95	9yrs	374
Global shipwrecks	r=0.92	12yrs	342
Gasoline pumped in Iraq	r=0.89	19yrs	337
Solar power generated in Belarus	r=0.91	8yrs	297
The price of gold	r=0.86	12yrs	282
Number of Las Vegas Hotel Room Check-Ins	r=0.87	11yrs	280
London Gold Prices	r=0.9	10yrs	278
Total sales of commercial vehicles in China	r=0.89	7yrs	258
Michael Schumacher's Formula One Ranking	r=0.86	10yrs	257
Renewable energy production in Brazil	r=0.83	19yrs	226
Google searches for 'i am tired'	r=0.82	19yrs	198
McDonald's stock price (MCD)	r=0.79	20yrs	194
Annual US household spending on cereals and bakery products	r=0.82	20yrs	194
Annual US household spending on bakery products	r=0.82	20yrs	194
Customer satisfaction with HP	r=0.8	19yrs	192
Annual US household spending on maintenance and repairs	r=0.81	20yrs	192
Ticket prices at North American movie theaters	r=0.78	20yrs	191
Popularity of the first name Santiago	r=0.81	20yrs	191
Annual US household spending on medical services	r=0.8	20yrs	191
Inflation in the US	r=0.79	20yrs	190
Chunghwa Telecom Co.'s stock price (CHT)	r=0.8	19yrs	190
Popularity of the first name Lucia	r=0.79	20yrs	188
Annual US household spending on fruits and vegetables	r=0.78	20yrs	188
Annual US household spending on medical supplies	r=0.78	20yrs	188
Caterpillar's stock price (CAT)	r=0.77	20yrs	186
Popularity of the first name Tatum	r=0.78	20yrs	186
Annual US household spending on fresh fruits	r=0.77	20yrs	186
Annual US household spending on fresh vegetables	r=0.77	20yrs	186
Annual US household spending on processed vegetables	r=0.77	20yrs	186
US household spending on fresh fruits	r=0.76	20yrs	185
Carjackings in the US	r=-0.89	19yrs	176
Blue cheese consumption	r=0.75	19yrs	170
Google searches for 'who is prince william'	r=0.81	15yrs	170
Customer satisfaction with Sprint	r=0.8	17yrs	170
Google searches for 'i am dizzy'	r=0.77	19yrs	167
Hydopower energy generated in Sierra Leone	r=0.83	19yrs	166
Yearly Total Gross Income of US Farms	r=0.76	20yrs	166
Annual Revenue of Walt Disney Company	r=0.75	20yrs	166
Butter consumption	r=0.72	19yrs	166
US Wind Power Generation Capacity	r=0.76	20yrs	165
Microsoft's Worldwide Earnings	r=0.76	20yrs	165
Average milk produced per cow in the US	r=0.74	20yrs	165
The distance between Neptune and Uranus	r=0.75	20yrs	165
Number of Lawyers in the United States	r=0.7	20yrs	164
Total NBA League Revenue	r=0.74	20yrs	162
Southern Copper's stock price (SCCO)	r=0.77	20yrs	156
Popularity of the first name Lina	r=0.78	20yrs	156
Liquefied petroleum gas used in Guyana	r=0.82	19yrs	152
Yum! Brands' stock price (YUM)	r=0.76	20yrs	145
Popularity of the first name Miles	r=0.77	20yrs	145
Jet fuel used in Lebanon	r=0.81	19yrs	140
Google searches for 'do i need to go to the doctor'	r=0.77	19yrs	137
Popularity of the first name Colt	r=0.77	20yrs	135
Hispanic cheese consumption	r=0.71	19yrs	134
Petroluem consumption in Morocco	r=0.81	19yrs	130
Google searches for 'ice bath'	r=0.76	19yrs	126
Popularity of the first name Chaim	r=0.77	20yrs	125
Hydopower energy generated in Brazil	r=0.78	19yrs	118
Google searches for 'highest paying jobs'	r=0.76	19yrs	116
Digital Realty Trust's stock price (DLR)	r=0.78	18yrs	116
Popularity of the first name Shiloh	r=0.77	20yrs	115
Annual US household spending on food	r=0.76	20yrs	115
Annual US household spending on property taxes	r=0.76	20yrs	110
Hydopower energy generated in Eswatini	r=0.78	19yrs	108
Google searches for 'how to move to europe'	r=0.72	19yrs	106
Oracle's stock price (ORCL)	r=0.76	20yrs	105
Popularity of the first name Camila	r=0.76	20yrs	104
Annual US household spending on dairy products	r=0.75	20yrs	104
Biomass power generated in Portugal	r=0.78	19yrs	98
Annual US household spending on utilities	r=0.74	20yrs	97
The Toronto-Dominion Bank's stock price (TD)	r=0.75	20yrs	94
Google searches for 'cold shower'	r=0.74	19yrs	92
US household spending on fruits and vegetables	r=0.74	20yrs	92
Wind power generated in Taiwan	r=0.78	19yrs	88
Google searches for 'what is the FDIC'	r=0.74	19yrs	82
The Coca-Cola Company's stock price (KO)	r=0.71	20yrs	82
Petroluem consumption in Indonesia	r=0.8	19yrs	78
Popularity of the first name James	r=-0.89	20yrs	78
Royal Bank of Canada's stock price (RY)	r=0.74	20yrs	72
Popularity of the first name Daryl	r=-0.89	20yrs	68
Petroluem consumption in Malta	r=0.78	19yrs	66
CSX Corporation's stock price (CSX)	r=0.74	20yrs	62
Jet fuel used in Uganda	r=0.78	19yrs	56
Popularity of the first name Priscilla	r=-0.86	20yrs	56
Fastenal Company's stock price (FAST)	r=0.74	20yrs	52
Popularity of the first name Gloria	r=-0.86	20yrs	46
Petroluem consumption in Poland	r=0.76	20yrs	44
Albemarle's stock price (ALB)	r=0.74	20yrs	42
Popularity of the first name Anton	r=-0.86	20yrs	36
Popularity of the first name Josie	r=0.76	20yrs	24
Electricity generation in Belize	r=0.76	19yrs	16
Popularity of the first name Candice	r=-0.84	20yrs	14
Renewable energy production in Cameroon	r=0.76	19yrs	6
Popularity of the first name Armani	r=0.76	20yrs	4
Fossil fuel use in Mexico	r=0.76	19yrs	-4
Popularity of the first name Brice	r=-0.84	20yrs	-6
Biomass power generated in Netherlands	r=0.76	19yrs	-14
Popularity of the first name Dylan	r=-0.82	20yrs	-18
Biomass power generated in Rwanda	r=0.76	19yrs	-24
Popularity of the first name Adam	r=-0.82	20yrs	-28

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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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