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
Standard detion is measured in ? 
Select and explain. 
A. Distribution, B. Dispersion, C. Mean-detion, D. All of the following
B: Dispersion
Answer: B: Dispersion 
Explanation: Ans. is 'b' i.e., Dispersion