<p>There are topics which keep coming back in different forms such as normality testing of random variables. I thought maybe it makes sense to create a question with the best possible formulation, then put a few answers to it referring to good previous answers. This way we'd increase the probability that whoever is looking for an answer will find this Q&amp;A in Google or SE search, and will be satisfied with a complete comprehensive answer. If someone missed the answer, then we'd know that there's this "best answer" to which we'd refer them.</p>
