DA0-002 Data Analysis Practice Question
Which TWO of the following data quality dimensions are most directly affected by duplicate records?
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
✓
Uniqueness
Duplicates harm accuracy (incorrect counts) and uniqueness (duplicate entries). Completeness, consistency, timeliness are less directly affected.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Timeliness
Why it's wrong here
Timeliness refers to data being up-to-date.
- ✗
Consistency
Why it's wrong here
Consistency refers to logical coherence across data, not directly duplicates.
- ✓
Uniqueness
Why this is correct
Correct: Duplicates violate uniqueness.
- ✓
Accuracy
Why this is correct
Correct: Duplicates cause inaccurate counts and aggregates.
- ✗
Completeness
Why it's wrong here
Completeness refers to missing data, not duplicates.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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