Which of the following data analysis functions is used to determine whether company policies are met by employee transactions, such as verifying that traveling employees book their accommodations at approved hotels?

The compliance verification function is a data analysis technique specifically designed to test data against a set of predefined rules, policies, or regulations. In the scenario provided, this function would be used to compare employee expense reports against the company's travel policy (i.e., the list of approved hotels) to flag any transactions that are out of compliance. This is a direct application of testing for adherence to internal controls.

A. The correlation analysis function is used to find relationships or patterns between different variables, not to test for adherence to a specific rule.
B. The Join function is a database operation used to combine records from two or more tables; it is a tool used in analysis but not the verification function itself.
C. The gap testing function is used to identify missing numbers in a sequential series, such as missing checks or invoices, not policy violations.

1. ACFE. (2023). Fraud Examiners Manual, International Edition. Section 2: Data and Technology, "Data Analysis Techniques." The manual describes compliance verification as a method to identify transactions that violate specific policies.

2. Singleton, T. (2010). The Role of the Auditor in the Prevention and Detection of Business Fraud: A Study of the Perceptions of Certified Fraud Examiners. Journal of Forensic & Investigative Accounting, 2(2). This article discusses data analytics in fraud examination, aligning with the use of specific tests for policy compliance.