DA0-002 Data Analysis Practice Question
A data analyst calculates the mean, median, and mode of a dataset. Which of the following measures of central tendency is least affected by extreme outliers?
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
✓
Median
The median is resistant to outliers because it is the middle value, whereas the mean is pulled by extreme values and the mode may not be affected but is less robust for continuous data.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Median
Why this is correct
The median is not affected by extreme values.
- ✗
Range
Why it's wrong here
Range is highly affected by outliers.
- ✗
Mode
Why it's wrong here
The mode may remain unchanged but is not a robust measure for numeric data with outliers.
- ✗
Mean
Why it's wrong here
The mean is sensitive to outliers.
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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.