CPE Risk Management & Quality Assurance 3 — Questions and Answers
Question 1: Which quality management tool displays the frequency of defect categories in descending order to help prioritize corrective actions?
- Control chart
- Scatter diagram
- Pareto chart (Correct answer)
- Histogram
Correct answer: Pareto chart
A Pareto chart ranks defect categories from most to least frequent, enabling teams to focus on the vital few causes responsible for the majority of problems.
Question 2: On a CPE exam context, 'expected monetary value' (EMV) of a risk is calculated as:
- Probability × Cost of Response
- Probability × Impact (Correct answer)
- Likelihood × Duration
- Severity × Detectability × Occurrence
Correct answer: Probability × Impact
EMV = Probability × Impact, providing a single monetary figure that represents the weighted average outcome of a risk event.
Question 3: A contractor notices a recurring pattern of concrete strength test failures only during hot weather. Which quality tool would best identify this time-related trend?
- Cause-and-effect diagram
- Control chart (Correct answer)
- Check sheet
- Affinity diagram
Correct answer: Control chart
Control charts plot data over time and can reveal patterns or trends that correlate with environmental or temporal factors.
Question 4: In schedule risk analysis, what is the term for the additional time added to a project schedule to account for identified risks?
- Float
- Lag
- Contingency reserve (Correct answer)
- Management reserve
Correct answer: Contingency reserve
Contingency reserve is added to the schedule baseline to address known risks with defined response plans, distinct from management reserve for unknown unknowns.
Question 5: Which international standard provides guidelines for quality management systems most commonly referenced in construction project quality plans?
- ISO 31000
- ISO 9001 (Correct answer)
- PMBOK 7th Edition
- AACE 18R-97
Correct answer: ISO 9001
ISO 9001 establishes requirements for quality management systems and is widely referenced for construction project quality plans worldwide.
Question 6: A project team is evaluating risks using a three-point estimate approach. If the optimistic (O) = 10 days, most likely (M) = 20 days, and pessimistic (P) = 42 days, what is the PERT expected duration?
- 21 days
- 24 days
- 22 days (Correct answer)
- 20 days
Correct answer: 22 days
PERT Expected = (O + 4M + P) / 6 = (10 + 4×20 + 42) / 6 = 132 / 6 = 22 days.
Question 7: What does 'quality control' focus on in contrast to 'quality assurance'?
- Defining quality standards before work begins
- Monitoring and auditing quality processes organization-wide
- Inspecting specific deliverables to detect defects (Correct answer)
- Training staff on quality procedures
Correct answer: Inspecting specific deliverables to detect defects
Quality control (QC) focuses on product inspection to identify defects in deliverables, while quality assurance (QA) focuses on process adherence and prevention.
CPE Risk Management & Quality Assurance 3
Which quality management tool displays the frequency of defect categories in descending order to help prioritize corrective actions?