DA0-002 Visualization and Reporting Practice Question
A heat map of store sales by region shows very low correlation between advertising spend and revenue, but a scatter plot of the same data shows a strong positive relationship. What is the most likely cause?
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
✓
Data was aggregated incorrectly in the heat map
Heat maps often aggregate data into bins (e.g., averages), which can mask the underlying relationship.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Data was aggregated incorrectly in the heat map
Why this is correct
Averaging within bins can reduce variability and hide correlations.
- ✗
The heat map used an incorrect color scale
Why it's wrong here
Color scale affects interpretation but not the underlying relationship.
- ✗
Outliers were removed only for the scatter plot
Why it's wrong here
Outlier removal would affect both similarly.
- ✗
The chart types are inherently incompatible
Why it's wrong here
Both can show relationships; discrepancy indicates data handling issue.
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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.