CISA Information System Auditing Process Practice Question
During an audit, the auditor uses a sampling method where the population is divided into subgroups, and samples are selected from each subgroup. This method is known as:
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
✓
Stratified sampling
Stratified sampling divides the population into subgroups (strata) and samples from each.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Systematic sampling
Why it's wrong here
Selects every nth item from a list.
- ✗
Judgmental sampling
Why it's wrong here
Non-statistical, subjective selection.
- ✗
Random sampling
Why it's wrong here
Each item has equal probability; no subgroups.
- ✓
Stratified sampling
Why this is correct
Correct definition.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CISA practice question is part of Courseiva's free ISACA 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 CISA exam.