DA0-002 Visualization and Reporting Practice Question
Which TWO actions are best practices for creating effective data visualizations?
⚠ Common exam trap
CompTIA often tests the misconception that maximizing data-ink ratio means eliminating all whitespace, when in fact whitespace is a critical design element for readability and should be preserved judiciously.
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
✓
Avoid using more than five slices in a pie chart
Pie charts with more than five slices become cluttered and difficult to read, making it hard for viewers to compare proportions accurately. Limiting slices to five or fewer ensures the chart remains clear and effectively communicates the relative sizes of categories. This best practice aligns with data visualization principles that prioritize clarity and cognitive ease.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Avoid using more than five slices in a pie chart
Why this is correct
Too many slices make pie charts unreadable.
- ✗
Maximize data-ink ratio by removing all whitespace
Why it's wrong here
Whitespace improves readability; removing all is counterproductive.
- ✗
Always include gridlines with high contrast
Why it's wrong here
Gridlines should be subtle so they don't distract.
- ✗
Use 3D effects to make charts look professional
Why it's wrong here
3D can distort data and hinder accurate reading.
- ✓
Use color to represent data values consistently
Why this is correct
Color coding helps convey information efficiently.
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