system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Best cha to represent incidence of disease over a period of time
assistant
The correct answer is  Line diagram:- Trend of a event over a period of time and scatter plot relationship between two quantitative variables Ref:- K Park, 24th ed; pg num:- 883