This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostatistics, Subject name: Social & Preventive Medicine
[{'content': 'Order for the Margin of error in the graph given above is? \nSelect and explain. \nA. 3>2>1, B. 3>1>2, C. 1>3>2, D. 1=2=3', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (a) 3>2>1* Margin of Error: Amount of random sampling error in a survey\'s results* Margin of error is simply the "radius" (or half the width) of a confidence interval* Margin of error = Critical value x Standard error* Standard error is inversely related to sample size (SEmean = SD/[?]Sample size)* Margin of error is inversely related to the Sample size', 'role': 'assistant'}]