This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': "The significance of difference between propoions can also be tested by- \nSelect and explain. \nA. .'t' test, B. Chi square test, C. ANOVA, D. Correlation and regression", 'role': 'user'}, {'content': 'Answer: B \nExplanation: * Chi-Square test offers a method of testing the significance of difference between the propoions. * Its advantage lies in the fact that it can also be used when more than two groups are to be compared. * By using this test, we can find out if the difference between two propoions or ratios has occurred by chance. The steps involved are- 1) Testing the null hypothesis. 2) Applying chi-square test. 3) Calculating the degree of freedom. 4) Comparing with probability tables.', 'role': 'assistant'}]