DA0-002 Visualization and Reporting Practice Question
An analyst creates a pie chart showing market share of four companies: A (45%), B (30%), C (15%), D (10%). A stakeholder complains that it is difficult to compare C and D. Which alternative chart should the analyst recommend?
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
✓
Horizontal bar chart
A horizontal bar chart allows viewers to compare individual values by length, making it easy to see the difference between 15% and 10%. Pie charts rely on angles, which are difficult to compare for small slices. A line chart is for trends over time, a stacked bar chart shows parts of a whole but not individual comparisons as clearly, and a scatter plot shows relationships between variables. Thus, a horizontal bar chart is the best alternative for comparing C and D.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Horizontal bar chart
Why this is correct
Horizontal bar chart allows easy length comparison between categories.
- ✗
Line chart
Why it's wrong here
Line chart is for trends, not for comparing discrete categories.
- ✗
Stacked bar chart
Why it's wrong here
Stacked bar shows part-to-whole like pie, still hard to compare subcomponents.
- ✗
Scatter plot
Why it's wrong here
Scatter plot is for relationships, not for comparing category values.
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Written by Johnson Ajibi, MSc IT Security
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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.