CCM Quality, Safety & Risk Management 3 — Questions and Answers
Question 1: Which technique is used to identify the root cause of a quality defect by repeatedly asking 'why' until the fundamental cause is discovered?
- Pareto Analysis
- 5 Whys Analysis (Correct answer)
- Fishbone Diagram
- Control Chart Analysis
Correct answer: 5 Whys Analysis
The 5 Whys technique drills down through symptom layers by asking 'why' iteratively, typically five times, to reach the root cause of a problem.
Question 2: A project manager identifies that a subcontractor's scaffolding erection poses an imminent danger. What authority does the Construction Manager have?
- None — only OSHA inspectors can stop work on a construction site
- The CM can stop work in the affected area to protect workers from imminent harm (Correct answer)
- The CM must first issue a written notice and allow 24 hours for correction
- The CM can only document the hazard and report it to the general contractor
Correct answer: The CM can stop work in the affected area to protect workers from imminent harm
Under CMAA standards, the CM has the authority and responsibility to stop work when an imminent danger to life safety exists, pending corrective action.
Question 3: In statistical quality control, what does a control chart's Upper Control Limit (UCL) represent?
- The maximum specification limit set in the contract documents
- Three standard deviations above the process mean, indicating a statistically unusual result (Correct answer)
- The highest acceptable value before the product is rejected
- The target value for the process being monitored
Correct answer: Three standard deviations above the process mean, indicating a statistically unusual result
The UCL is set at three standard deviations above the process mean; a data point above it signals the process may be out of statistical control.
Question 4: Which risk identification technique involves a structured, anonymous survey of experts across multiple rounds to reach consensus on risk likelihood?
- Monte Carlo Simulation
- Delphi Technique (Correct answer)
- SWOT Analysis
- Decision Tree Analysis
Correct answer: Delphi Technique
The Delphi Technique uses iterative anonymous questionnaires sent to a panel of experts, allowing independent opinions to converge toward consensus without groupthink.
Question 5: What does a project's Experience Modification Rate (EMR) primarily measure?
- A contractor's past workers' compensation claims relative to industry average (Correct answer)
- The number of safety training hours completed per employee per year
- The total cost of OSHA fines incurred by the contractor
- The percentage of work performed without a lost-time incident
Correct answer: A contractor's past workers' compensation claims relative to industry average
EMR compares a contractor's actual workers' compensation losses to the expected losses for the industry, with 1.0 being average; above 1.0 indicates higher-than-average risk.
Question 6: A project team decides to redesign a foundation to eliminate the need for deep excavation in unstable soil. This risk response is BEST classified as:
- Risk mitigation
- Risk transfer
- Risk avoidance (Correct answer)
- Risk acceptance
Correct answer: Risk avoidance
Risk avoidance eliminates the threat entirely by changing the project plan so the risk-causing activity no longer exists.
Question 7: Which sampling method divides a population into subgroups and randomly samples from each subgroup proportionally?
- Simple random sampling
- Systematic sampling
- Stratified sampling (Correct answer)
- Cluster sampling
Correct answer: Stratified sampling
Stratified sampling divides the population into distinct subgroups (strata) and draws random samples from each, ensuring proportional representation of all subgroups.
CCM Quality, Safety & Risk Management 3
Which technique is used to identify the root cause of a quality defect by repeatedly asking 'why' until the fundamental cause is discovered?