This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Data Variables, Subject name: Social & Preventive Medicine
[{'content': 'Method to represent qualitative data - \nSelect and explain. \nA. Histogram, B. Comulative frequency curve, C. Frequency polygon, D. Bar Chart', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Bar Chart DataScaleGraph/DiagramQuantitativeInterval scale Ratio scaleHistogram Frequency polygon frequency curves line chart scatter diagram Cumulative frequency Curve Line Chart graphQualitativeNominal scale Ordinal scaleBar diagram Pie chart PictogramMap diagram or spot map", 'role': 'assistant'}]