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?
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.
When data has limitations, it's important to disclose them, such as missing returns, to avoid misleading conclusions.
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 may not be necessary; a caveat can be used.
- ✗
Report the 15% increase as final, because the returns are insignificant.
Why it's wrong here
Ignoring the limitation could mislead stakeholders.
- ✓
Include a caveat that returns from the last week are missing and revenue may be overstated.
Why this is correct
Disclosing the limitation is the correct approach.
- ✗
State that the revenue increase is exactly 15% and provide a confidence interval.
Why it's wrong here
A confidence interval does not address the known missing data.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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