DA0-002 Visualization and Reporting Practice Question
A data analyst wants to show the relationship between advertising spend and sales revenue for 50 stores. Which chart type is most appropriate?
⚠ Common exam trap
Candidates often confuse a line chart (which connects points in sequence) with a scatter plot (which treats points as independent observations), leading them to incorrectly choose a line chart when no temporal or ordered dimension exists.
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
✓
Scatter plot
A scatter plot is the most appropriate chart for showing the relationship between two continuous variables—advertising spend and sales revenue—across 50 stores. Each point on the plot represents one store, allowing the analyst to visually assess correlation, trends, or outliers. This aligns with the DA0-001 objective of selecting visualizations that best represent bivariate relationships.
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 trends over time, not correlations between two variables.
- ✓
Scatter plot
Why this is correct
Scatter plots show the relationship between two continuous variables.
- ✗
Bar chart
Why it's wrong here
Bar charts compare categories, not relationships between two numeric variables.
- ✗
Pie chart
Why it's wrong here
Pie charts show part-to-whole relationships, not correlations.
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