DA0-002 Data Analysis Practice Question
An analyst is planning an A/B test to compare two website designs. Which TWO factors should be considered when calculating the required sample size?
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
✓
Desired effect size
Statistical power and desired effect size are key inputs for sample size calculations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Data type of the outcome variable
Why it's wrong here
While it may affect the test, it is not a factor in sample size formula; effect size and power are.
- ✓
Desired effect size
Why this is correct
Correct.
- ✓
Statistical power
Why this is correct
Correct.
- ✗
Color scheme of the designs
Why it's wrong here
Irrelevant.
- ✗
Number of missing values
Why it's wrong here
Missing values are not part of sample size calculation.
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JA
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.