DA0-002 Visualization and Reporting Practice Question
A data analyst is preparing a report on monthly website traffic for the marketing team. The team wants to see how the total number of visits has changed over the past 12 months. Which chart type is most appropriate for this purpose?
⚠ Common exam trap
The trap here is assuming that any chart showing monthly values works equally well, but bar charts emphasize discrete comparisons while line charts are superior for continuous time trends.
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
✓
Line chart
A line chart is the best choice for visualizing trends over time because it connects data points to show continuity. For monthly website traffic, it clearly illustrates the direction and magnitude of changes across the 12-month period, enabling the marketing team to quickly grasp performance patterns and anomalies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Line chart
Why this is correct
A line chart is ideal for showing trends over time, as it connects data points to illustrate continuous change. With months on the x-axis and visits on the y-axis, it clearly displays the trajectory of website traffic, making it easy to spot increases, decreases, or seasonal patterns.
- ✗
Bar chart
Why it's wrong here
A bar chart can show monthly visits, but it emphasizes comparisons between discrete categories rather than continuous trends. For 12 months, bars are less effective than a line chart for highlighting the overall pattern and rate of change, especially when the data has many points.
- ✗
Pie chart
Why it's wrong here
A pie chart shows parts of a whole at a single point in time, not changes over time. Using it for 12 months would require 12 separate pie charts, which would be cluttered and fail to show the trend clearly. It is not suitable for time-series data like monthly traffic.
- ✗
Scatter plot
Why it's wrong here
A scatter plot displays the relationship between two continuous variables, such as advertising spend and sales. It does not effectively show a time trend because the x-axis would represent time, but the plot would show individual points without a connecting line, making it harder to perceive the overall trend.
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Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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.