During an audit of company expenses, the internal auditor performed a test using data analytics...

During an audit of company expenses, the internal auditor performed a test using data analytics and identified a violation of the company's expenses policy. The auditor who discovered the issue considered it a potential fraudulent transaction and informed the chief financial officer (CFO). The CFO dismissed the concern because he did not understand the data analytics test that was performed and the transaction was of a low value. Given this situation, which skills or competencies should this internal auditor seek to improve?