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': 'Simplest measure of dispersion? \nSelect and explain. \nA. Range, B. Standard detion, C. Mean detion, D. Co-efficeint of range', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Range The range Range is the simplest measure of dispersion. It is defined as the difference between the largest and smallest values of the variable. Range (R) = Largest value (L) - Smallest value (S)", 'role': 'assistant'}]