Question

Besides the Chi-Square test, pick a nonparametric method and summarize it in 4 sentences or less.

Answer 1

The ordinary sign test is a method of non-parametric method.

In which we test the median, the location parameter such that the null hypothesis is actual median equals null median against actual median, not equal null median, in which we find differences between each observation and null median and we consider only positive deviations. Thus, we reject the null hypothesis if where, is the critical value at level of significance.