DA0-002 Data Analysis Practice Question
A data analyst is compiling a quarterly report for a retail chain and needs to show how sales revenue is distributed across five product categories. The analyst wants a single visualization that makes it easy to compare each category's share of total revenue and also includes a separate small panel displaying total revenue for the quarter. Which visualization approach best meets these requirements?
⚠ Common exam trap
The trap here is assuming that displaying the total in a chart title or as part of a stacked bar satisfies the need for a separate panel, when the scenario explicitly calls for a distinct panel.
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
✓
A dashboard with a pie chart showing category shares and a separate KPI card displaying total revenue.
The requirement is to compare each category's share of total revenue and to have a separate small panel for total revenue. A dashboard with a pie chart and a KPI card meets both: the pie chart shows proportions, and the KPI card is a distinct panel for the total. Other options either embed the total in the chart or use less effective visuals for comparing shares.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A dashboard with a pie chart showing category shares and a separate KPI card displaying total revenue.
Why this is correct
A dashboard allows multiple visual elements to be combined. A pie chart clearly shows each category's proportion of total revenue, while a separate KPI card prominently displays the overall total. This directly satisfies both requirements: comparing shares and having a distinct panel for the total. It is the most effective and standard approach for this type of reporting need.
- ✗
A stacked bar chart showing revenue by category, with the total revenue represented by the height of the entire stack.
Why it's wrong here
A stacked bar chart can show total revenue as the full bar height, but it does not easily allow comparison of each category's share of the total because the segments are not aligned on a common baseline. The scenario specifically requires comparing each category's share, which a pie chart does better. Also, there is no separate panel for the total; it is embedded in the bar.
- ✗
A donut chart with each category's share, plus a small table in a separate panel listing the total revenue.
Why it's wrong here
A donut chart shows proportions well, and a small table can display the total. But the scenario asks for a visualization approach that includes a separate panel for total revenue. While a table is a valid panel, it is not a visual representation and may not integrate as seamlessly as a dashboard element. This option is plausible but less effective than using a dedicated dashboard with a KPI card.
- ✗
A pie chart showing each category's percentage of total revenue, with the total revenue displayed as the chart title.
Why it's wrong here
A pie chart effectively shows each category's share of the whole, and placing the total in the title is a common practice. However, the scenario explicitly requires a separate panel for total revenue, not just a title annotation. The title is not a distinct panel, so this option does not fully satisfy the requirement for a separate small panel displaying the total.
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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