Which application of Benford's law is useful in fraud detection?

• A. It analyzes the frequency distribution of leading digits in numerical data to detect anomalies
• B. It predicts future stock prices with certainty
• C. It ensures data encryption
• D. It schedules data backups

Answer: (A)

Benford's law deals with how often different digits appear as the leading digit in many real-world numbers. In fraud detection, auditors use this by checking whether numbers like invoices, expense amounts, or financial figures follow that expected pattern. If the leading digits appear too frequently or in an irregular sequence compared with Benford's distribution, it can suggest that the data have been manipulated or fabricated, drawing attention to records that deserve closer scrutiny. The other options don’t fit because Benford's law isn’t a method for predicting stock prices with certainty, nor is it a technique for encryption or for scheduling backups.