DA0-002 Visualization and Reporting Practice Question
An analyst creates a bar chart showing average sales by region. They want to ensure that the y-axis starts at zero to avoid misleading interpretation. This practice aligns with which dashboard design principle?
⚠ Common exam trap
It's easy for candidates to confuse 'Appropriate Precision' (a data integrity principle) with 'Visual Hierarchy' (a layout principle) or 'Data-Ink Ratio' (a minimalist design principle).
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
✓
Appropriate precision
Starting the y-axis at zero is a fundamental practice to ensure that the visual representation of data (bar heights) accurately reflects the actual values, preventing exaggeration or minimization of differences. This principle directly supports 'Appropriate Precision' by maintaining the integrity of the data visualization and avoiding misleading interpretations, which is a key consideration in dashboard design.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Appropriate precision
Why this is correct
Starting axes at zero avoids misleading precision in bar lengths.
- ✗
Visual hierarchy
Why it's wrong here
Visual hierarchy is about prominence, not axis scaling.
- ✗
Clear labels and titles
Why it's wrong here
This is about labeling, not axis scaling.
- ✗
Data-ink ratio
Why it's wrong here
Data-ink ratio is about removing non-data ink, not axis scaling.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DA0-002 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DA0-002 exam.