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Advises on statistical analysis that are often useful in practice (but are not always guaranteed to work).

45 votes

Rules of thumb for minimum sample size for multiple regression

I'm not a fan of simple formulas for generating minimum sample sizes. At the very least, any formula should consider effect size and the questions of interest. And the difference between either side o …
Jeromy Anglim's user avatar
28 votes

Rules of thumb for "modern" statistics

If you're deciding between two ways of analysing your data, try it both ways and see if it makes a difference. This is useful in many contexts: To transform or not transform Non-parametric or para …