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': "TRUE regarding chi square test is \nSelect and explain. \nA. Null hypothesis is equal, B. Doesn't test the significance, C. Measures the significance of difference between two propoion, D. Tests correlation and regression", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref: Parks 23rd edition pg 852 Chi-square test offers an alternate method of testing the significance of difference between two propoions. Advantage: it can also be used when more than 2groups are to be compared.', 'role': 'assistant'}]