CQA Full 150 Randomly Drawn Questions Mock Exam (300 Minutes)

Free sample questions

6 questions from this set, shown in full with the correct answer and the reasoning behind it. Read them as a study resource.

1. Q1.Every value in a data set is increased by exactly $5$.
   
   What happens to the mean and the standard deviation?

   • A.Both the mean and the standard deviation are unchanged
   • B.The mean increases by $5$ and the standard deviation is unchanged✓ Correct answer
   • C.Both the mean and the standard deviation increase by $5$
   • D.The mean is unchanged and the standard deviation increases by $5$

   Explanation

   Shifting every value moves the centre without changing how far the values sit from each other, and dispersion depends only on those distances. Assuming the spread moves with the mean is the common error and confuses location with variation.

   Reference: CQA BoK V

2. Q2.A contract laboratory has been audited three times this year: once by its own trained staff, once by a pharmaceutical customer before signing a supply agreement, and once by an accreditation body.
   
   In that order, the audits were:

   • A.Third party, second party, first party
   • B.First party, second party, third party✓ Correct answer
   • C.First party, third party, second party
   • D.Second party, first party, third party

   Explanation

   Self-audit is first party, a customer with a contractual interest is second party, and an independent body with no interest in the outcome is third party. The accreditation body is third party even though the laboratory pays it, because payment is not a commercial interest in the audited product.

   Reference: CQA BoK I

3. Q3.An auditor has no reporting relationship to the area she audits, yet consistently writes softer findings for a department managed by a close friend.
   
   Which principle is compromised?

   • A.Confidentiality
   • B.Due diligence
   • C.Objectivity✓ Correct answer
   • D.Independence

   Explanation

   Independence is a structural condition and this auditor satisfies it, since no reporting line connects her to the area. Objectivity is the state of mind that independence is meant to protect, and it is the one that has failed here, which is why the two terms cannot be used interchangeably.

   Reference: CQA BoK I

4. Q4.An auditor records the number of days to close corrective actions:
   
   $$\begin{array}{c|c} \hline \textbf{Days} & \textbf{Frequency} \\ \hline 2 & 3 \\ 3 & 5 \\ 4 & 9 \\ 5 & 2 \\ 6 & 1 \\ \hline \end{array}$$
   
   What are the median and the mode?

   • A.Median 3, mode 4
   • B.Median 4, mode 9
   • C.Median 3.65, mode 4
   • D.Median 4, mode 4✓ Correct answer

   Explanation

   The distribution holds $20$ observations, so the median is the average of the tenth and eleventh values, both of which fall in the four-day class, giving $4$. The mode is the most frequent value, which is also $4$; the figure $9$ is that value's frequency rather than a data value, and $3.65$ is the mean.

   Reference: CQA BoK V

5. Q5.An auditor drafts the finding: several purchase orders were not properly approved.
   
   Which single change would most reduce the chance of dispute?

   • A.Replace the word several with the word multiple
   • B.Add the name and title of the buyer who released them
   • C.Attach a copy of the purchasing procedure to the report
   • D.Cite the purchase order numbers and the requirement✓ Correct answer

   Explanation

   Specific identifiers plus the requirement make the finding checkable, which converts an argument about opinion into a verifiable question. Naming the buyer is the plausible addition and makes the statement worse, since findings are raised against processes rather than individuals.

   Reference: CQA BoK III

6. Q6.An auditor reviews a team's problem-solving record:
   
   $$\begin{array}{c|l} \hline \textbf{Why} & \textbf{Answer recorded} \\ \hline 1 & \text{The label was wrong} \\ 2 & \text{The operator picked the wrong roll} \\ 3 & \text{The operator did not check} \\ 4 & \text{The operator was careless} \\ 5 & \text{The operator needs retraining} \\ \hline \end{array}$$
   
   What is the principal weakness of this analysis?

   • A.It reaches a conclusion without statistical support
   • B.It does not identify who will implement the action
   • C.It stops at operator behavior rather than the enabling condition✓ Correct answer
   • D.It used exactly five iterations instead of continuing further

   Explanation

   The chain converges on the person by the third why and never asks why two similar rolls could be confused at that station. Retraining will be the corrective action, and the condition that made the error easy will remain, which is why the same defect returns.

   Reference: CQA BoK V

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• 150 exam-style CQA questions randomly drawn from a pool
• Full explanation for every question (on completing the exam)
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