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Visualization and Reporting →mediumMultiple ChoiceObjective-mapped

DA0-002 Visualization and Reporting Practice Question

A scatter plot of advertising spend vs. revenue shows no clear correlation, but the analyst suspects a relationship exists. Which addition to the plot could help reveal a hidden trend?

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

✓

Add a trendline

Adding a trendline (e.g., linear regression) can reveal underlying patterns in noisy scatter plot data, making it easier to see correlations that are not immediately obvious from the raw points alone. Other options like changing to a bar chart, increasing marker size, or removing data points would not help reveal a hidden trend and may obscure the data.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    Change to a bar chart

    Why it's wrong here

    Bar chart is not suitable for continuous bivariate data.

  • ✗

    Increase the marker size

    Why it's wrong here

    Marker size does not reveal hidden correlations.

  • ✗

    Remove data points with low spend

    Why it's wrong here

    Removing data may introduce bias and is not recommended without cause.

  • ✓

    Add a trendline

    Why this is correct

    A trendline helps model and visualize the underlying relationship.

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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.