Which statement describes the role of the sampling approach in audits when 100 percent review isn't feasible?

Which statement describes the role of the sampling approach in audits when 100 percent review isn't feasible?

• A. The sampling approach is determined after the full universe is known.
• B. The sampling approach is optional and rarely used in practice.
• C. The sampling approach is defined to approximate the overall error rate.
• D. The sampling approach is only used for financial calculations.

Answer: (C)

The main idea here is that sampling is used to estimate the overall error rate when a complete check isn’t practical. The sampling approach is designed so that the results from the sample can be projected to the entire population, giving an approximate error rate with a stated level of confidence. This lets auditors draw meaningful conclusions about the whole set without reviewing every item. In practice, you plan the sampling approach as part of the audit planning to obtain a reliable projection, and it’s a standard, commonly used tool rather than optional. It applies beyond just financial calculations and helps assess controls, compliance, and process effectiveness as well.

The main idea here is that sampling is used to estimate the overall error rate when a complete check isn’t practical. The sampling approach is designed so that the results from the sample can be projected to the entire population, giving an approximate error rate with a stated level of confidence. This lets auditors draw meaningful conclusions about the whole set without reviewing every item.

In practice, you plan the sampling approach as part of the audit planning to obtain a reliable projection, and it’s a standard, commonly used tool rather than optional. It applies beyond just financial calculations and helps assess controls, compliance, and process effectiveness as well.