This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
[{'content': 'Graph showing relation between two variables is a \nSelect and explain. \nA. Frequency polygram, B. Histogram, C. Scatter diagram, D. Pictogram', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Scatter diagram is a graph in which the values of two variables are plotted along two axes, the pattern of the resulting points revealing any correlation present. Ref : Park 23rd edition Pgno : 846', 'role': 'assistant'}]