DA0-002 Visualization and Reporting Practice Question
A data analyst needs to visualize the relationship between two continuous variables: advertising spend (in dollars) and monthly sales (in units). Which chart type is most appropriate?
⚠ Common exam trap
Many exam-takers choose a line chart (Option D) because they mistakenly think 'relationship' implies a trend over time, but line charts require a sequential or time-based x-axis, not two independent continuous variables.
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 visualizing the relationship between two continuous variables, such as advertising spend (dollars) and monthly sales (units). It displays individual data points on an x-y axis, allowing the analyst to observe correlation, clustering, or outliers between the two numeric fields. This aligns with the DA0-001 objective of selecting visualizations based on data type and analytical goal.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Scatter plot
Why this is correct
Scatter plots are used to display the relationship between two continuous variables.
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Pie chart
Why it's wrong here
Pie charts show parts of a whole, not relationships between two continuous variables.
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Bar chart
Why it's wrong here
Bar charts compare categories, not continuous variables.
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Line chart
Why it's wrong here
Line charts are best for trends over time; scatter plot is more direct for relationship analysis.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DA0-002 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DA0-002 exam.