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': 'Type of sampling, if random sample is taken from a characteristic population, eg. Hindus, Muslims, Christians etc- \nSelect and explain. \nA. Simple random, B. Systemic random, C. Stratified random, D. Cluster', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e., Stratified random "Stratified random sampling is paicularly useful where one is interested in analysing the data by a ceain characteristic of the population, viz Hindus, Muslims, Christians, age group etc, - as we know these groups are not equally distributed in the population." ............ Park', 'role': 'assistant'}]