Sampling, Tests of Controls and Substantive Procedures
This topic covers audit sampling, population selection, sample size, tolerable deviation, tests of controls, tests of details, substantive analytical procedures, and extrapolation.
How to study for CPA AUD
Build every answer around engagement type, independence, risk, assertion, evidence quality, professional skepticism, and the correct report.
Core concepts
Concept 1
Sampling, Tests of Controls and Substantive Procedures questions test whether a CPA candidate can apply professional standards, risk assessment, evidence evaluation, and reporting judgment to assurance engagements.
Exam cue: Identify the engagement type, entity type, applicable standard, assertion, risk, and evidence objective.
Concept 2
The best AUD answer usually protects independence, professional skepticism, documentation quality, risk response, sufficiency of evidence, and the correct report for the engagement.
Exam cue: Determine whether the task is acceptance, planning, risk assessment, control understanding, procedure selection, evidence evaluation, or reporting.
Concept 3
Eliminate answers that skip planning, overrely on management, confuse issuer and nonissuer rules, ignore control risk, or choose a report before resolving the evidence.
Exam cue: Prefer answers that preserve independence, professional skepticism, documented rationale, sufficient appropriate evidence, and accurate communication.
Risk pitfalls and guardrails
Treating audit, review, compilation, preparation, attestation, and compliance engagements as if they have the same assurance level.
Guardrail: Use a 15-second safety pause before finalizing your action.
Choosing a procedure before identifying the assertion and risk it is meant to address.
Guardrail: Use a 15-second safety pause before finalizing your action.
Reporting too early without evaluating misstatements, scope limitations, going concern, subsequent events, or required communications.
Guardrail: Use a 15-second safety pause before finalizing your action.
Memory anchors
Audit Sampling
Audit sampling applies procedures to less than the entire population to draw a conclusion.
Population
The population is the complete set of items from which the sample is selected.
Sampling Risk
Sampling risk is the risk that the sample conclusion differs from the population conclusion.
Tolerable Deviation
Tolerable deviation is the maximum control deviation rate the auditor will accept.
Test of Controls
A test of controls evaluates operating effectiveness of controls.
Test of Details
A test of details obtains evidence about amounts, transactions, disclosures, or account balances.
Substantive Analytics
Substantive analytical procedures use plausible relationships to identify misstatements.
Stratification
Stratification divides a population into groups to improve sampling efficiency.
Extrapolation
Extrapolation projects sample misstatements to the population.
Nature Timing Extent
Nature, timing, and extent describe what procedure is done, when, and how much evidence is obtained.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
What distinguishes statistical audit sampling?
What is sampling risk?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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