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': "A 'non-parametric test' used to compare three or more independent groups of sampled data? \nSelect and explain. \nA. Chi-square test, B. Fishers test, C. Kruskal-Wallis test, D. McNemar test", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Kruskal-Wallis Test is a non-parametric test (distribution-free) used to compare three or more independent groups of sampled data.', 'role': 'assistant'}]