thinktoomuch.net

A piece of wisdom I got from my father: Diet Coke makes you fat! Easy to prove too, simply look at the people drinking Diet Coke, they’re all fat! Wise words indeed, because they were said in jest, illustrating a very important point. While discussing this important point, ignore the fact that both thin and [...]

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In some ways similar to selection bias, confirmation bias is the tendency for people to favour information that agrees with their preconceptions or beliefs, regardless of whether it is actually true. Confirmation bias is an example of a cognitive bias, a human trait, whereas selection bias is typically a methodological error in a scientific study. [...]

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There are many mistakes one can make when setting up a scientific study. Awareness of such mistakes and biases is very important so that we can avoid drawing false conclusions from bad data. Today I’m briefly introducing selection bias.

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