DA0-002 Visualization and Reporting Practice Question
A data analyst is creating a report to summarize customer satisfaction survey results. The survey asked customers to rate their satisfaction on a scale from 1 (very dissatisfied) to 5 (very satisfied). The analyst wants to show the number of respondents for each rating level. Which visualization is most appropriate?
⚠ Common exam trap
Watch out — candidates often confuse a bar chart with a histogram, especially when the data is numerical but discrete.
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
✓
Bar chart
A bar chart is the most appropriate visualization for showing the frequency of categorical data like satisfaction ratings. It clearly displays the count for each rating level, allowing easy comparison. Other chart types either imply a trend, assume continuous data, or make comparison difficult.
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 it's wrong here
A line chart is used to show trends over time, typically with a continuous time axis. Satisfaction ratings are categorical (ordinal) data, not a time series. Using a line chart would imply a progression or trend that does not exist, and it would misrepresent the distribution of responses. A bar chart is better suited for displaying counts of categorical data.
- ✓
Bar chart
Why this is correct
A bar chart is ideal for displaying the frequency or count of categorical data, such as satisfaction ratings. Each bar represents a rating level, and the height shows the number of respondents. This makes it easy to compare counts across categories. It accurately represents the ordinal nature of the ratings without implying continuity or trend.
- ✗
Pie chart
Why it's wrong here
A pie chart shows proportions of a whole, but it is less effective for comparing counts across categories, especially when there are multiple categories. With five rating levels, a pie chart would make it difficult to compare the number of respondents per level accurately. A bar chart is superior for this purpose because it allows for precise comparison of category frequencies.
- ✗
Histogram
Why it's wrong here
A histogram is used for continuous numerical data to show frequency distribution. Satisfaction ratings on a 1-5 scale are discrete and ordinal, not continuous. While a histogram might look similar to a bar chart, it implies binning of continuous values. For discrete rating categories, a bar chart is more appropriate and avoids misinterpretation of the data type.
Go deeper
Related to this question
About these practice questions
One of 1,004 original DA0-002 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.