A

one sample median testallows us to test whether a sample median differs significantly from a hypothesized value. For this non-parametric method, we do not need to assume that it is interval and normally distributed (we only need to assume an ordinal variable). The null hypothesis is that the distribution is symmetric about the hypothesized value.More specifically,

Sign test, and theWilcoxon signed rank testwill be provided here.

When do you use sign test and when wilcoxon? What is the R code to do the check to use one or another?

I found this resource in where this test is done with chi sq. (http://psych.unl.edu/psycrs/handcomp/hc1median.pdf ) When can we use this one and not wilcoxon or sign?