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': 'Preferred measure of central tendency for ordinal data is: \nSelect and explain. \nA. Mean, B. Mode, C. Median, D. Range', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Mean is the preferred measure of central tendency for interval data Median is preferred measure for ordinal data Mode is preferred measure for nominal and dichotomous data Ref: Medical biostatistics, 1st edition pg: 111', 'role': 'assistant'}]