DA0-002 Data Analysis Practice Question
A data analyst is comparing the average test scores of students who attended a tutoring program versus those who did not. Which statistical test is most appropriate for determining if there is a significant difference between the means of these two independent 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
The independent samples t-test is used to compare the 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.
- ✗
Paired t-test
Why it's wrong here
Paired t-test is for dependent groups (e.g., before/after).
- ✗
Chi-square test
Why it's wrong here
Chi-square test is for categorical variables, not comparing means.
- ✓
Two-sample t-test
Why this is correct
Correct: independent samples t-test compares means of two groups.
- ✗
ANOVA
Why it's wrong here
ANOVA is for comparing three or more groups.
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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.