Question:easy
Which diagram is the best representation of the incidence of a disease across different points on a timeline?
Which diagram is the best representation of the incidence of a disease across different points on a timeline?
Show Hint
Think about which chart joins points to show a trend over time.
Updated On: Jun 23, 2026
- Histogram
- Line diagram
- Scattered diagram
- Bar diagram
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: Epidemiological data plotted over time needs a graph whose horizontal axis is continuous time and whose plotted points can be connected to reveal direction of change.
Step 2: Among the options, only the line diagram joins successive data points, making it ideal to track whether incidence is rising, falling, or stable across the timeline.
Step 3: A bar diagram and a histogram use bars suited for category comparison or frequency distribution rather than a smooth trend, while a scatter diagram is meant to show association between two measured variables, not a temporal trend.
Step 4: Therefore the correct representation of incidence over time is the line diagram.\[\boxed{\text{Line diagram}}\]
Step 2: Among the options, only the line diagram joins successive data points, making it ideal to track whether incidence is rising, falling, or stable across the timeline.
Step 3: A bar diagram and a histogram use bars suited for category comparison or frequency distribution rather than a smooth trend, while a scatter diagram is meant to show association between two measured variables, not a temporal trend.
Step 4: Therefore the correct representation of incidence over time is the line diagram.\[\boxed{\text{Line diagram}}\]
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