DA0-002 Visualization and Reporting Practice Question
A data analyst needs to visualize the relationship between advertising spend and sales revenue for 50 products. Which chart type is most appropriate?
⚠ Common exam trap
Watch out — candidates often confuse a bar chart or histogram with a scatter plot when the question involves two numeric variables, but a bar chart is designed for categorical comparisons and a histogram for single-variable distributions, not for bivariate relationships.
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 for visualizing the relationship between two continuous variables—advertising spend and sales revenue—across 50 products. It allows the data analyst to assess correlation, trends, and potential outliers by plotting each product as a point on a Cartesian plane, with advertising spend on the x-axis and sales revenue on the y-axis.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Histogram
Why it's wrong here
Histograms show distribution of a single variable.
- ✗
Bar chart
Why it's wrong here
Bar charts compare categories, not relationships.
- ✗
Pie chart
Why it's wrong here
Pie charts show proportions.
- ✓
Scatter plot
Why this is correct
Scatter plots show correlation between two variables.
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