DA0-002 Data Analysis Practice Question
A data analyst is preparing a dataset for analysis and needs to address data quality issues. Which TWO of the following are common data cleaning tasks?
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
✓
Imputing missing values
Handling missing values and removing duplicates are standard data cleaning tasks.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Performing hypothesis testing
Why it's wrong here
Hypothesis testing is part of analysis, not cleaning.
- ✓
Imputing missing values
Why this is correct
Correct.
- ✗
Building a regression model
Why it's wrong here
Model building is analysis.
- ✗
Calculating correlation coefficients
Why it's wrong here
Correlation is analysis.
- ✓
Deduplicating records
Why this is correct
Correct.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.