DA0-002 Visualization and Reporting Practice Question
A data analyst discovers that the sales data for the current quarter shows a 15% increase in revenue. However, the analyst notes that the data does not include returns from the last week due to a system lag. How should the analyst communicate this uncertainty?
⚠ Common exam trap
DA0-002 often tests the importance of data quality and the need to disclose limitations rather than presenting incomplete data as final.
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
✓
Include a caveat that returns from the last week are missing and revenue may be overstated.
The analyst must be transparent about the data's limitations. Since the missing returns could reduce the reported revenue increase, the correct action is to explicitly state that returns from the last week are not included and that the 15% figure may be overstated. This maintains data integrity and allows stakeholders to make informed decisions.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Delay the report until returns are processed.
Why it's wrong here
Delaying withholds a decision-ready trend that stakeholders need now, and the lag may persist indefinitely. Deferral is correct when the missing data would materially change the conclusion and no interim estimate is defensible; here the analyst can publish the 15% with the returns gap explicitly flagged.
- ✗
Report the 15% increase as final, because the returns are insignificant.
Why it's wrong here
Reporting the figure as final conceals a known gap: last week's returns are missing, so the 15% is overstated and unaudited. It is tempting because preliminary figures are often released when returns are immaterial, and that would be correct had the lag been confirmed as negligible rather than merely assumed.
- ✓
Include a caveat that returns from the last week are missing and revenue may be overstated.
Why this is correct
Stating that last week's returns are absent and revenue may therefore be overstated gives stakeholders the specific limitation affecting the 15% figure. This satisfies the stem's uncertainty requirement by disclosing the missing data rather than presenting the increase as definitive.
- ✗
State that the revenue increase is exactly 15% and provide a confidence interval.
Why it's wrong here
A confidence interval quantifies sampling variability, not missing records; it cannot bound the effect of an absent week of returns, so the stated 15% remains unqualified. Confidence intervals are the right tool when the sample is complete and you need to express statistical precision around an estimate.
About these practice questions
This DA0-002 question is part of Courseiva's 1,004-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. 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.