Sample Size Increase
Direct Relationship
Sample size will increase as following increase:
Sample Size Decrease
Inverse Relationship
Sample size will decrease as following INCREASE:
What affects sample size in a variables sampling application?
Keywords leading to Attribute Sampling
Used to test internal controls:
Keywords related to Substantive Tests
Variables sampling: $$$
What is related to effectiveness of the audit?
2. Risk of assessing control risk too low
What is related to the efficiency of the audit?
Auditor does more work than necessary:
What does upper deviation rate consist of?
Sample deviation rate plus
Allowance for sampling risk
What is considered in determining sample size for a test of controls?
When is ratio estimation most effective?
When there is a correlation between book values and audit amounts.
Auditor may fail to identify an existing problem
Incorrect acceptance
Assessing control risk too low
Auditor may falsely identify a problem where none actually exists
Inccorect Rejection
Assessing control risk too high
What is compared to tolerable deviation rate to determine reliance on control?
Upper deviation rate (not the rate found in the sample)
Objective of variables sampling
Used to estimate numerical measurement of a population, such as dollar value.To obtain evidence about reasonableness of monetary amounts.
Type of Audit Required Under PCAOB Standards
Integrated audit: audting both FS and management’s assessment of the effectiveness of IC over financial reporting.
Date of management representation letter should coincide with the date of the:
Auditor’s report
Purpose of management representation letter
When a material weakness exists when reporting on a nonissuers control over financial reporting, the auditor should….
Issue an adverse opinion
Upper deviation rate < auditor’s tolerable deviation rate
Auditor may rely on control
Upper deviation rate > auditor’s tolerable deviation rate
Auditor would not rely on the control
Upper deviation rate formula
Sum of sample deviation rate and allowance (cushion) for sampling risk.
Factors in determining the sample size in attribute sampling (test of controls)
Comparing upper deviation rate and tolerable rate in auditor’s reliance on control.
The tolerable rate is maximum rate of error auditor willing to accept without changing control risk assessment or planned reliance on IC. This is used to calculate sample size and determined prior to arriving at upper deviation rate.
You then compute upper deviation (sample deviation + allowance for sampling risk) and compare to tolerable rate to determine if you can rely or need to adjust (form conclusion)
The upper deviation is related to sample while tolerable is population as whole. If upper deviation > than tolerable than likely that entire population deviation will be hire since upper is only related to just a sample.
UDR = TDR = Do not rely
Translation of upper deviation rate equaling 4.7%.
The auditor is x% sure the deviation rate does not exceed 4.7%