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': 'Best way to plot the change of incidence of disease over time - \nSelect and explain. \nA. Line diagram, B. Bar chart, C. Histogram, D. Pie chart', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Line diagramo Line diagram is used to show the trend of events with passage of time and shows how the frequency of a particular event (e.g. incidence of disease) vary over time,Line diagram 1 Line chart/Line graph)o It is used to show the trend of events with passage of time and shows how the frequency of a particular event or variable vary over time.DataMethodFrequency of occurrence (comparisons of magnitude)Bar ChartPie chartTrends over timeLine graphDistribution (not related to time)Histogram,Frequency polygonAssociation (Looking for correlation between two variables)Scatter diagram", 'role': 'assistant'}]