If We Wish to Test Whether Two Related Populations Have

question 54

Multiple Choice

If we wish to test whether two related populations have equal medians, an appropriate nonparametric test to use is:

• A) the Mann-Whitney U test.
• B) the Kruskal-Wallis test.
• C) the Wilcoxon signed rank test.
• D) the Wilcoxon matched-pairs signed rank test.

---

Definitions:

Obsessions

Persistent, involuntary thoughts, images, or impulses that cause significant anxiety or discomfort.

Delusions

False beliefs held with strong conviction, despite superior evidence to the contrary, often found in psychiatric conditions.

Compulsions

Repetitive behaviors or mental acts that an individual feels driven to perform in response to an obsession or according to rigid rules.

Schizophrenia

A grave psychiatric syndrome with pronounced disruptions in cognitive processing, emotional regulation, personal identity, verbal communication, perceptual experiences, and conduct.