DA0-002 Visualization and Reporting Practice Question
A data analyst needs to show the cumulative revenue over time, with emphasis on the total magnitude. Which chart type 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
✓
Area chart
Area charts display cumulative values over time, filling the area under the line to emphasize magnitude.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Area chart
Why this is correct
Area charts are ideal for cumulative trends over time.
- ✗
Scatter plot
Why it's wrong here
Scatter plots show relationships between two variables.
- ✗
Bar chart
Why it's wrong here
Bar charts show individual values, not cumulative trends.
- ✗
Pie chart
Why it's wrong here
A pie chart displays parts of a whole at a single point in time, not a cumulative trend over a continuous time axis. It is tempting because it visually emphasises total magnitude through proportional slices, making it suitable for showing revenue composition by category at a fixed date. However, it lacks the sequential time dimension required to plot cumulative growth across multiple periods.
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