DA0-002 Visualization and Reporting Practice Question
Which THREE are considered best practices in dashboard design? (Select three.)
⚠ Common exam trap
CompTIA often tests the misconception that adding visual flair (like 3D effects) or exhaustive data improves a dashboard, when in reality these choices degrade readability and violate core principles of effective data visualization.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Using heat maps to visualize correlation
Heat maps effectively visualize correlation by using color intensity to represent the strength of relationships between two variables, making patterns and outliers immediately apparent. This aligns with best practices for dashboard design, which prioritize clarity and rapid insight over decorative elements.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Using heat maps to visualize correlation
Why this is correct
Heat maps effectively show correlation matrices.
- ✗
Using 3D charts to add depth
Why it's wrong here
3D can distort perception and add clutter.
- ✓
Maximizing the data-ink ratio
Why this is correct
Data-ink ratio focuses on showing data without non-data ink.
- ✓
Providing interactive filters for exploration
Why this is correct
Filters let users drill down without cluttering the initial view.
- ✗
Including every data point in the dashboard
Why it's wrong here
Including all points overloads; summary is better.
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