DA0-002 Data Analysis Practice Question
A retailer wants to test if a new website layout increases the average time spent on the site. They split traffic: control group (old layout) and treatment group (new layout). Which statistical test is most appropriate to compare the average time spent between the two groups?
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
✓
Two-sample t-test
A t-test is used to compare means of two independent groups.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ANOVA
Why it's wrong here
ANOVA compares means of three or more groups.
- ✗
Pearson correlation
Why it's wrong here
Correlation measures association, not group difference.
- ✗
Chi-square test
Why it's wrong here
Chi-square is for categorical variables.
- ✓
Two-sample t-test
Why this is correct
Compares means of two independent groups.
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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.