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': 'Bih weight of all 10 babies born in a nursing home on a day was 2.7 kg. Standard detion is - \nSelect and explain. \nA. 0, B. 1, C. 0.27, D. 2.7', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 0.00 o This question is very simple. o Standard detion is a measure of dispersion from central value. o In the question, there is only one central value (2.7 Kg) as all 10 babies have same weight. Thus, there is no dispersion. o Also, you can get the answer Mean = 2.7+2.7+2.7+2.7+2.7+2.7+2.7+2.7+2.7+2.7 = 2.7 10 (x - = 2.7 - 2.7 = 0 o Thus SD is Zero.", 'role': 'assistant'}]