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Use this tag to ask about the nature of nonparametric or parametric methods, or the difference between the two. Nonparametric methods generally rely on few assumptions about the underlying distributions, whereas parametric methods make assumptions that allow data to be described by a small number of parameters.
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How do I compare sample means in this experimental-control group study?
As the question is tagged t-test, I will therefore focus on it:
There is one miss-conception that I would like to pointed out: The t-test is about the sample mean s and therefore it assumes that the …