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    Non-parametric sample size requirements: per group, or overall?

    Hello, Hopefully this is a reasonably straightforward question that belongs in this forum but I was wondering whether the sample size requirements (i.e. not too small to be <3-6) for non-parametric methods such as the Mann-Whitney and Wilcoxon Signed Rank test refer to per group (such as each...
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    Population correlation coefficient sampling distribution

    Ok great I understand this now, thanks!
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    Population correlation coefficient sampling distribution

    Hello and thank you for your response. Sorry I didn't quite understand your comment, but do you mean that while we can assume normality of the sampling distribution for the population correlation coefficient, it is not strong enough to feasibly create a confidence interval? Many thanks, SF
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    Population correlation coefficient sampling distribution

    Hello, When constructing a CI for population correlation coefficient (p), I am told you cannot use +/- 1.96 as the sampling distribution is non-normal? However, I am also told that each X and Y are assumed to be pairs of independent observations from a bivariate normal distribution? How come...