DA0-002 Data Analysis Practice Question
A data analyst needs to create a visual that shows the distribution of customer ages across different regions. Which chart type is most appropriate?
⚠ Common exam trap
Many candidates choose a pie chart because they think of 'distribution' as a single whole, forgetting that the question requires comparison across multiple regions, which a pie chart cannot handle.
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
✓
Stacked bar chart
A stacked bar chart is most appropriate because it allows the analyst to compare the distribution of customer ages (typically grouped into bins) across multiple regions simultaneously. Each bar represents a region, and the segments within the bar show the proportion or count of each age group, making it easy to see both the overall distribution and regional differences.
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 charts are best for showing trends over time, not distributions across categories.
- ✓
Stacked bar chart
Why this is correct
A stacked bar chart can display the distribution of age groups within each region, making comparisons easy.
- ✗
Scatter plot
Why it's wrong here
Scatter plots are used to show relationships between two continuous variables, not distributions across regions.
- ✗
Pie chart
Why it's wrong here
Pie charts show proportions of a whole, but when comparing multiple regions, they become cluttered and hard to interpret.
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JA
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.