AUD 3 - Risk, Evidence, and Sampling Flashcards

1
Q

if the assessed level of fraud risk is high, then the audit procedures will be designed to (increase or decrease) detection risk?

A

decrease

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2
Q

When control risk is assessed at a maximum level, then the auditor should?

A

document the assessment and the auditor should make the decision to perform more substantive procedures

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3
Q

If the acceptance level of detection risk decreases, then the auditor?

A

will need more assurance which is achieved through substantive test

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4
Q

what is the relationship between risk of material misstatement and detection risk?

A

an increase in the risk of material misstatement would cause a decrease in allowable detection risk

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5
Q

What is a dual purpose test?

A

this is a test of controls that is performed concurrently with a test of details on the same transaction

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6
Q

To determine the number of items to be selected for a particular sample for a test of controls, the auditor should consider…

A
  1. the tolerable rate of deviation from the controls being tested
  2. the likely rate of deviations (expected deviation rate)
  3. the allowable risk of assessing control risk too low
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7
Q

What are examples of nonsampling risk?

A
  1. the auditor selecting inappropriate auditing procedures,
  2. using inappropriate audit evidence
  3. failure by the auditor to recognize misstatements in documents examined
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8
Q

When an analytical procedure is used as the principal substantive test of a significant assertion, the auditor is required to document…?

A
  1. the auditor’s expectations
  2. factors considered in developing those expectations
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9
Q

To determine the sample size for a test of controls, the auditor should consider:

A
  1. the tolerable deviation rate
  2. the allowable risk of assessing control risk too low
  3. the expected deviation rate
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10
Q

The refusal of a client’s legal counsel to provide a representation on the legality of a particular act committed by the client is ordinarily

a scope limitation or reason to withdraw from engagement

A

a scope limitation

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11
Q

Does an auditor rely on conclusive or persuasive audit evidence?

A

persuasive

An auditor typically relies on persuasive, rather than conclusive, evidence because of inherent limitations of the audit.

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12
Q

what assertion does a bank rec satisfy?

A

Bank reconciliations typically test for the existence of cash.

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13
Q

Which of the following might be detected by an auditor’s review of the client’s sales cutoff?

A

inflated sales for the year

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14
Q

Assuming a low assessed risk of material misstatement, which of the following audit procedures would be least likely to be performed?

A. Obtaining a client representation letter.
B. Physical inspection of a sample of inventory.
C. Search for unrecorded cash receipts.
D. Confirmation of accounts receivable.

A

C. Search for unrecorded cash receipts.

GAAS do not specifically require a search for unrecorded cash receipts. Given a low assessed RMM, the auditor might decide to reduce the audit effort devoted to substantive tests of assertions about cash and omit the procedure.

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15
Q

Under which of the following circumstances would it be advisable for the auditor to confirm accounts payable with creditors?

A. Creditor statements are not available and internal controls relating to accounts payable are unsatisfactory.
B. Internal controls relating to accounts payable are effective and there is sufficient appropriate evidence on hand to minimize the risk of material misstatement.
C. The majority of accounts payable balances are with associated companies.
D. Confirmation response is expected to be favorable and accounts payable balances are immaterial in amount.

A

A. Creditor statements are not available and internal controls relating to accounts payable are unsatisfactory.

When the internal controls relevant to assertions about accounts payable are ineffective, the risk of material misstatement is increased. The greater the RMM, the greater the assurance required from substantive procedures related to an assertion. The auditor may need to change the nature, timing, or extent of substantive procedures and consider external confirmations. The auditor also should confirm accounts payable when (1) documentary evidence is lacking, (2) individual creditors have relatively large balances, (3) the client has made a major purchase from the creditor regardless of the size of the balance, (4) unusual transactions are involved, or (5) the account is secured.

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16
Q

An entity’s internal control requires that an approved voucher, a prenumbered purchase order, and a prenumbered receiving report accompany every check request. To determine whether checks are being issued for unauthorized expenditures, an auditor most likely would select items for testing from the population of all

A. Purchase orders.
B. Receiving reports.
C. Canceled checks.
D. Approved vouchers.

A

C. Canceled checks.

The best procedure is to test whether any checks have been issued without vouchers, purchase orders, and receiving reports. An appropriate sample of canceled checks should be traced to the related supporting documentation. The checks should not have been written before the dates on the receiving reports.

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17
Q

An auditor found material misstatements in other information that is unrelated to matters in the audited statements, and management refused to correct those misstatements. Which of the following actions may the auditor not perform?

A. Withhold the audit report on the financial statements.
B. Modify the opinion on the audit report of the financial statements.
C. Withdraw from the engagement.
D. Notify those charged with governance.

A

B. Modify the opinion on the audit report of the financial statements.

When management refuses to correct a material misstatement in other information that is unrelated to matters in the audited statements, the auditor should notify those charged with governance. The auditor should also take any appropriate further action, such as consulting counsel, withholding the audit report, or withdrawing from the engagement. However, this is not a basis for modifying the opinion on the audit report.

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18
Q

Four factors are considered in determining the sample size for mean-per-unit estimation.

A

Those factors include

(1) the population size,
(2) an estimate of population variation (the standard deviation),
(3) the risk of incorrect rejection (its complement is the confidence level), and
(4) the tolerable misstatement (the desired allowance for sampling risk is a percentage thereof, and this percentage is a function of the risk of incorrect rejection and the allowable risk of incorrect acceptance).

19
Q

An advantage of statistical sampling over nonstatistical sampling is that statistical sampling helps an auditor to

A

Measure the sufficiency of the evidence obtained.

Statistical sampling helps the auditor to design an efficient sample, to measure the sufficiency of the evidence obtained, and to evaluate the sample results. Auditors are required to obtain sufficient appropriate evidence. Sufficiency is the measure of the quantity of evidence. It relates to the design and size of the sample.

20
Q

As a result of control testing, a CPA has decided to reduce control risk. What is the impact on substantive testing sample size if all other factors remain constant?

A

the sample size would be lower

21
Q

What is the risk of incorrect rejection?

A

The risk of incorrect rejection is the risk that the sample supports the conclusion that the recorded account balance is materially misstated when it is not.

This risk relates to the efficiency, not the effectiveness, of the audit.

Incorrect rejection ordinarily results in the application of additional procedures that finally lead the auditor to the proper conclusion.

22
Q

Which of the following is the primary objective of monetary-unit sampling (MUS)?

A

MUS gives each monetary unit in the population an equal chance of selection.

However, the auditor does not examine an individual monetary unit but uses it to identify an entire transaction or balance to audit (the logical sampling unit).

MUS is useful only for tests of overstatements (e.g., of assets) because a systematic selection method is applied (every nth monetary unit is selected).

Accordingly, the larger the transaction or balance, the more likely it will be selected. This method is inappropriate for testing a population (e.g., liabilities) when understatement is the primary audit consideration.

23
Q

Which of the following best describes what the auditor means by the rate of occurrence in an attribute sampling plan?

A. The number of deviations that can be estimated to be contained in the sample.
B. The estimated frequency with which a certain characteristic occurs within a population.
C. The degree of confidence that the sample is representative of the population.
D. The dollar range within which the true population total can be expected to fall.

A

B. The estimated frequency with which a certain characteristic occurs within a population.

Attribute sampling is used to estimate the rate of occurrence of a specific attribute in a population, e.g., the number of invoices paid twice by a client. In effect, the auditor attempts to estimate the number (or percentage) of times this specified deviation occurred in the population based upon results from the sample.

24
Q

when determining a sample of test of controls, what three things should an auditor consider?

A
  1. expected deviation rate (characteristics of the population)
  2. tolerable deviation rate; and,
  3. allowable risk of assessing control risk too low
25
Q

when determining a sample of test of details, what three things should an auditor consider?

A
  1. the risk of incorrect acceptance/rejection (aka acceptable level of risk)
  2. tolerable misstatement
  3. the expected misstatement
26
Q

What are the advantages of Statistical Sampling?

A

Statistical sampling enables the auditor to:

  1. Measure the sufficiency of the audit evidence obtained
  2. Provide an objective basis for quantitatively evaluating sample results
  3. design an efficient sample
  4. quantify sampling risk to limit risk to an acceptable level
27
Q

What are the sampling risks in substantive testing?

A
  1. The risk of incorrect acceptance - is the risk that the sample supports the conclusion that the recorded account balance is not materially misstated when in fact it is misstated. This is the auditors BIGGEST CONCERN
  2. Risk of Incorrect -the risk that the sample supports the conclusion that the recorded account balance is materially misstated when in fact it is not materially misstated. This results in a LACK OF EFFICIENCY
28
Q

What are the sampling risks in test of controls?

A
  1. Risk of assessing control risk too low - risk that the assessed level of control risk based on the sample is less than the true risk based on the actual operating effectiveness of the control. This is the risk of over reliance. This is the auditors BIGGEST concern.
  2. Risk of assessing control risk too high - the risk that the assessed level of control risk based on the sample is greater than the true risk based on the actual operating effectiveness of the control. This is the risk of under reliance and results in a lack of efficiency.
29
Q

What sampling risks relate to the efficiency of an audit?

A

the risk of incorrect rejection and the risk of assessing control risk too high

30
Q

What sampling risks relate to the effectiveness of an audit?

A

these are risk that could lead to an inappropriate opinion.

risk of incorrect acceptance and the risk of assessing control risk too low.

31
Q

What is nonsampling risk?

A

when the auditor uses the wrong audit procedures or does not properly evaluation/interpret the audit evidence/results

32
Q

if the auditor increases the assessed level of control risk from 5 to 10%, what is the impact on the sample size?

A

it will decrease the sample size

33
Q

What is the upper deviation rate?

A

= sample deviation rate + allowance for sampling risk

34
Q

If the upper deviation rate is less than or equal to the auditor’s tolerable deviation rate, then the auditor should?

A

the auditor may rely on the control

35
Q

Define the following:

  1. Discovery sampling
  2. stop and go sampling
A

Both are used for attribute sampling

  1. Discovery sampling - can be used to identify fraud; appropriate to use when the auditor believe that the population deviation rate is zero or near zero.
  2. stop and go sampling - designed to avoid oversampling; only used when few errors are expected in the population
36
Q

What are the three commonly used variable sampling plans?

A
  1. Mean per Unit Estimation - uses the average value of the items in the sample to estimate the true population (ie estimate = average sample value x Number of items in population). MPU does not require the book value of the population to estimate true population value
  2. Ratio Estimation - uses the ratio of the audited (correct) values of items to their book values to project the true population value. Ratio estimation is highly efficient technique when the calculated audit amounts are approximately proportional to the client’s book amounts
  3. Difference Estimation - uses the average difference between the audited (correct) value of items and their book values to project the actual population value. Difference estimation is used instead of ratio estimation when the differences are not nearly proportional to book values
37
Q

Comparison of Variable Sampling Methods?

A
  1. MPU is very sensitive to the variability of the population. For this reason, auditors normally stratify (or divide) the population into relatively similar groups.
  2. Ratio and Difference methods usually require smaller sample sizes than the MPU; however, they are only effective when the auditor expects large numbers of over and under statements
  3. All three methods use the same sample size formulas and evaluation formulas. The sample size for the three methods varies b/c the standard deviations of the population are calculated differently for each of the three methods
38
Q

Population of 5000 accounts with a total value of $4,500,000; auditor selects a sample of 200 accounts with a book value of $184,200. The audited value of these accounts based on confirmation results is $175,000, with an average value of $875 ($175,000/200) per account.

What is the point estimate for:

  1. Mean per unit
  2. Ratio estimate
  3. Difference Estimation
A
  1. Mean per unit = $875 x 5000 accounts = $4,375,000
  2. Ratio Estimation = ($175,000 audit value/$184,200 book value) x $4,500,000 = $4,275,244
  3. Difference Estimation = ($184,200 BV - $175,000 AV)/200 x 5000 = $230,000 projected error; $4,500,000 - 230,000 = $4,270,000 point estimate
39
Q

What is Probability Proportional to Size Sampling (PPS)?

A

technique in which the sampling unit is defined as an individual dollar in a population; once a dollar is selected, the entire account (containing that dollar) is audited;

Advantage - automatically emphasizes larger items by stratifying the sample; the chance of an item being selected is proportionate to its dollar amount; if no errors are expected, PPS sampling generally requires a smaller sample than other methods

Disadvantage - zero balances, negative balances, and understated balances require special consideration.

40
Q

With zero expected errors, the reliability factors are as follows:

Risk of Incorrect Acceptance - Reliability Factor

1% - 4.6
5% - 3.0
10% - 2.3

Assume that the auditor assesses tolerable misstatement at $15,000 and the risk of incorrect acceptance at 5%. The book value of the population is $500,000.

What is the sampling interval?
What is the sample size?

A

The sampling interval is $15k/3.0= $5K
The sampling size is $500K/$5K = 100

41
Q

if the random start is 300 and the sampling interval is 5,000, the auditor will select accounts that contain dollars…

A

300; 5,300; 10,300; 15,300; 20,300 , etc

42
Q

PPS Evaluation of Sample Results - what is the projected error:

  1. Recorded amount $800, Audited amount $600
  2. Recorded amount $4900, Audited amount $0
  3. Recorded amount $8500, Audited amount $6900

What is the projected error if the sampling interval is $5K?

A
  1. Recorded amount $800, Audited amount $600
    -$200 variance / $800 = 25%, $5000 x 25% = $1,250
  2. Recorded amount $4900, Audited amount $0
    - $4,900 variance/ $4900 = 100%, $5000 x 100% = $5000
  3. Recorded amount $8500, Audited amount $6900
    -since the sample is greater than the sample interval you use the actual variance as the projected error.
43
Q

if the allowable risk of overreliance increases, then the sample size will?

A

decrease