Who was the first to say "Correlation does not imply causation" in so many words? I know that the idea dates back to David Hume, but Hume did his work about a century before the term "correlation" acquired its modern statitical meaning. I've seen many sources that crdit Karl Pearson with banishing the idea of causation from modern statistical theory, but none that attribute the quote directly to him. Sewall Wright? Francis Galton? Ronald Fisher? Any other candidates?
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