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: Dental
[{'content': 'The following diagram is drawn to study: \nSelect and explain. \nA. Trend of a variable over a period of time, B. Frequency of occurrence of events, C. Mean & median values of the given data, D. Relationship between two given variables', 'role': 'user'}, {'content': 'Answer: D \nExplanation: SCATTER DIAGRAM\n\nAlso known as ‘Correlation diagram’ or ‘Dot diagram’.\nIs used to depict ‘correlation (relationship) between 2 quantitative variables’.\n‘Vertical axis in scatter diagram: should be the dependent or the outcome variable.\nIn a scatter diagram, 2 imaginary lines are drawn along the distribution of dots/scatter.', 'role': 'assistant'}]