Certified Internal Auditor (CIA) Part 1: Business Acumen — Question 190

An internal auditor wants to sample data to test an audit theory in a cost-effective way. Which of the following sampling strategies should she use?

Answer options

• A. Statistical sampling only
• B. Nonstatistical sampling only
• C. A combination of both statistical and nonstatistical sampling.
• D. Neither approach to testing the audit theory would be cost effective.

Correct answer: B

Explanation

The correct answer is B, as nonstatistical sampling can often be more cost-effective and simpler for testing specific theories without the need for complex statistical calculations. Statistical sampling, while rigorous, may not be as economical for the auditor's purpose, and a combination may complicate the process unnecessarily. Option D is incorrect because at least one sampling method can be used effectively.