Audit Sampling Flashcards
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What is Audit Sampling?
Taking part of a population- subjecting it to audit procedures- projecting results to a population
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What are the characteristics of Statistical Sampling?
Based on formulas
Helps find an appropriate audit sample
Helps evaluate evidence obtained
Helps evaluate results and quantify Sampling Risk
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What are the characteristics of Non-Statistical Sampling?
Based on human decision
Equally acceptable as Statistical Sampling
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What are the characteristics of Substantive Tests?
Variables sampling
Probability proportionate to size sampling
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What type of sampling are Control Tests?
Attribute Sampling
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What is Sampling Risk?
Risk that your sample isn’t representative of population
Can happen even if audit is done properly
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What is the risk of assessing Control Risk too high?
A risk of Control Testing - Auditor works to make Control Risk lower
More substantive tests - Sample overstates Control Risk- Leads to an under-reliance on internal control- over-testing- and overall audit inefficiency
Audit ends up being effective (correct result)- but you do more work
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What is the risk of assessing Control Risk too low?
A risk of Control Testing - Complement to Confidence Level
Inverse relationship to Sample Size
Higher accepted risk of assessing Control Risk too low = Smaller Sample
Lower accepted risk of assessing Control Risk too low = Larger Sample
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What are the risks if the auditor concludes controls are operating effectively based on the sample and Control Risk is set too low?
Leads to higher Detection Risk - Fewer substantive tests
Sample understates Control Risk
This error leads to over-reliance on internal control- under-testing- and overall audit ineffectiveness.
Does NOT necessarily mean that the Financial Statements are materially misstated - it does mean that if there is one- you are less likely to find it
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What is the risk of Incorrect Acceptance?
A risk of Substantive Testing - Auditor accepts a balance as fairly stated- when in fact it is not fairly stated
Hurts audit effectiveness
Wrong conclusion reached
Efficient- but not effective
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What is the risk of Incorrect Rejection?
A risk of Substantive Testing - Auditor rejects balance as fairly stated when in fact it is fairly stated
Hurts audit efficiency
Wrong recommendations given
Effective- but not efficient
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What is Non-Sampling Risk?
Risk of human (auditor) missing an error
Also called exception- error or deviation.
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How does Sampling Risk compare to Non-Sampling Risk?
Sampling Risk deals with the chance that your audit sample is flawed
Non-Sampling risk deals with the chance that your human decisions/conclusions are flawed
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What is Attribute Sampling?
Looking at Control Procedures - Were invoices approved when paid?
Errors are stated in terms of %- not dollar amounts
For example- 5 invoices out of 100 were not properly paid. Error rate is 5%
Hint: If you see Error Rate on the Exam- they are referring to Attribute Sampling.
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How do you determine if Control Procedures are operating properly or not operating properly?
Control Procedures are either operating properly or they are not operating properly - based on Error Rate and the tolerance you have for errors