This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostatistics, Subject name: Social & Preventive Medicine
[{'content': 'Which one of the following tests can be used to study ordinal date from two independence samples from a population that is not noraml distributed? \nSelect and explain. \nA. The student t test, B. The wilcoxon rank sum test, C. The chi- square test, D. The one - way analysis of variance', 'role': 'user'}, {'content': 'Answer: B \nExplanation: .', 'role': 'assistant'}]