DA0-002 Visualization and Reporting Practice Question
A data visualization specialist needs to display the relationship between advertising spend and revenue for 50 product categories over 12 months. The data has many overlapping points. Which chart type best reveals the correlation and density?
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 with alpha blending
A scatter plot with transparency (alpha blending) reveals both correlation and point density by showing overlapping points as darker areas. A bubble chart adds a third variable. A heatmap on a grid loses resolution. A line chart is not for correlation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Heatmap with revenue binned
Why it's wrong here
Heatmap aggregates data into bins, losing the precise relationship.
- ✗
Line chart for each category
Why it's wrong here
Line charts are for trends over time, not for correlation between two continuous variables.
- ✗
Bubble chart
Why it's wrong here
Bubble chart introduces a third variable (size) and may still have overlapping issues.
- ✓
Scatter plot with alpha blending
Why this is correct
Transparency allows overlapping points to show density while preserving the relationship.
Go deeper
Related to this question
About these practice questions
Courseiva writes every DA0-002 question from scratch — 986 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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.