One of the assumptions for using the Wilcoxon sign-rank test is that the underlying distribution is continuous (see here.)
However, there are cases (for example, when analyzing Likert scale data) where this assumption might not necessarily hold. In such cases, what test can you use? And how would you do it with R?
(My only bet here is to use a randomization test on the median - which I imagine can be easily done using the boot package.)