DA0-002 Visualization and Reporting Practice Question
A data analyst wants to show the relative proportions of defects by type in a manufacturing process. There are 6 defect types. Which chart is most appropriate?
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
✓
Pie chart
A pie chart is standard for showing parts of a whole, especially with few categories. Bar chart is also possible but not the best for proportions. Scatter and line charts are not for proportions.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Line chart
Why it's wrong here
Line chart is for trends over time, not static proportions.
- ✓
Pie chart
Why this is correct
Pie chart effectively shows each defect type's share of total.
- ✗
Stacked bar chart
Why it's wrong here
A stacked bar chart is designed to illustrate the composition of multiple categories within several distinct groups, or how proportions change over time. For this scenario, where only a single set of 6 defect types needs to show its relative proportions within one overall process, a single stacked bar would be created. This makes comparing the individual defect type proportions less intuitive than charts specifically designed for parts-to-whole relationships. It is tempting because it does represent proportions, and would be appropriate if the analyst needed to compare the defect type distribution across several distinct manufacturing processes or different time periods.
- ✗
Scatter plot
Why it's wrong here
Scatter plot shows relationships, not proportions.
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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.