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1) Explain how we test independent against dependent variables in a regression analysis? What's the set up?

2) Does a correlation as presented in a regression analysis graph imply an actual casual relationship? For example - can I say with a high degree of confidence "that on every full moon a chimpanzee will scratch itself" and say it was because there was a full moon?

3) How are regression analyses often misused / misinterpreted at work or in the news? Cite an example.

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