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Introduction to Audit Sampling & Data Analytics

Why Auditors Use Sampling and Analytics

Auditors rarely examine every transaction because doing so is often impractical and costly. Instead, they use audit sampling to test a representative portion of data and increasingly use data analytics to analyze entire populations, identify unusual patterns, and improve audit quality.

  • Sampling allows auditors to draw conclusions about a population using a subset of items.
  • Data analytics helps identify trends, anomalies, and high-risk transactions.
  • Both techniques improve audit efficiency while maintaining audit quality.
Note
Even when data analytics analyzes an entire population, auditors still apply professional judgment when evaluating the results.
Summary
Audit sampling and data analytics help auditors gather sufficient appropriate evidence efficiently.