this post was submitted on 04 Jul 2023
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But correlation is sometimes caused by coincidence.
Do you have an example? I'm pretty sure correlation cannot be caused by coincidence.
Coincidence is describing two things happening at the same time but with separate causes. Correlation is describing two things having a common cause.
Here you go: https://www.tylervigen.com/spurious-correlations
First thing you learn in a statistics course is that correlation doesn't equal causation.
Correlation: two thing happening at the same time or one thing happening right after the other, regardless of whether the things are at all connected
Causation: one thing happening BECAUSE of the other
~~Oh yes I got my definition of correlation slightly wrong. Correlation doesn't necessarily mean that two things have the same cause but they do relate in some way either by having a common cause or by occuring in the same system. They definitely have more in common than happening just at the same time or right after each other like a coincidence.~~
~~I didn't claim that correlation equals causation and I hope you didn't get the impression because this would be oviously wrong.~~
Edit: I stand corrected and today I learned that "correlation" means that two things have a statistical relation without any causal relation implied. There can be a causal relation but it's not necessary. The key takeaway for me is that correlation describes a statistical relationship.