DA0-002 Visualization and Reporting Practice Question
A business analyst wants to show the relationship between advertising spend (independent variable) and sales revenue (dependent variable) for 12 different regions. Each region will be represented by a point. Which chart type is most appropriate?
⚠ Common exam trap
Test-takers frequently confuse scatter plots with line charts, mistakenly thinking a line connecting points is needed to show a relationship, but the exam tests the understanding that scatter plots are the standard for bivariate continuous data without an inherent sequence.
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 type because it directly visualizes the relationship between two continuous variables—advertising spend (independent) and sales revenue (dependent)—by plotting each of the 12 regions as a point. This allows the analyst to assess correlation, trends, and outliers, which is the core purpose of scatter plots in data visualization.
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 imply a sequential order (often time) and are not best for correlation.
- ✗
Bar chart
Why it's wrong here
Bar charts compare categories, not relationships between two numerical variables.
- ✓
Scatter plot
Why this is correct
Correct. Scatter plots reveal correlation between two variables.
- ✗
Histogram
Why it's wrong here
Histograms show distribution of a single variable, not relationships.
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