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': 'Quantitative data can be compared by? \nSelect and explain. \nA. Pictograph, B. Histogram, C. Pie cha, D. Spot Map', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref: Parks 23rd edition 844 Data representation: Quantitative: Histogram Frequency polygon Frequency curve Scatter diagram Line diagram Qualitative: Pie cha Bar cha Pictogram', 'role': 'assistant'}]