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: Social & Preventive Medicine
[{'content': 'Which of the following is a pre-requisite for the Chi square test to compare - \nSelect and explain. \nA. Both sample should be mutually exclusive, B. Both sample need not be mutually exclusive, C. Normal distribution, D. All of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Both sample should be mutually exclusive o Chisquare test and fisher's exact test has following assumptions:- i) Random Sampling of data ii) Data must from contingency table which contains the values that are numbers of subjects observed. iii) The categories defining the rows and columns of contigency table must be mutually exclusive. iv) Subjects are independent. v) The measurement are independent.", 'role': 'assistant'}]