DA0-002 Data Governance Practice Question
A data analyst creates a bar chart showing monthly sales for the current year. The CEO asks to see the same data but grouped by region. Which chart type is most appropriate for this new requirement?
⚠ Common exam trap
CompTIA often tests the distinction between grouped and stacked bar charts, trapping candidates who think any multi-category bar chart is equivalent, when in fact grouped bars are for comparing individual category values and stacked bars are for comparing totals and proportions.
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
✓
Grouped bar chart
A grouped bar chart is the most appropriate choice because it allows the CEO to compare monthly sales across different regions side by side within each month. This chart type effectively displays two categorical variables (month and region) and one quantitative variable (sales), making it easy to see both regional performance and monthly trends simultaneously.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Grouped bar chart
Why this is correct
Grouped bar charts compare values across categories and subgroups.
- ✗
Pie chart
Why it's wrong here
Pie charts show parts of a whole, not multiple series.
- ✗
Stacked bar chart
Why it's wrong here
Stacked bar charts show composition, not side-by-side comparison.
- ✗
Line chart
Why it's wrong here
Line charts emphasize trends over continuous intervals.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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