Final answer:
The assumption made in the Wilcoxon Signed Rank Test for Medians is that the data is paired.
Step-by-step explanation:
The assumption made in the Wilcoxon Signed Rank Test for Medians is that the data is paired. This means that there are two related measurements or samples drawn from the same pair of individuals or objects. The test is used to compare the medians or central tendencies of the paired data.