CEAC Quality Control & Process Improvement 2 — Questions and Answers
Question 1: When conducting a QC audit of accessibility documentation, which discrepancy is MOST critical to flag?
- Minor spelling errors in report headers
- Measured door clear width recorded as 31 inches when ADA requires 32 inches minimum (Correct answer)
- Inconsistent font sizes across sections
- Missing page numbers on appendices
Correct answer: Measured door clear width recorded as 31 inches when ADA requires 32 inches minimum
A door clear width of 31 inches falls below the 32-inch ADA minimum, making it a code-compliance failure that must be flagged and corrected.
Question 2: A process improvement team wants to reduce re-inspection rates on accessibility surveys. Which Lean tool is BEST suited to identify the root cause of recurring measurement errors?
- Kanban board
- 5 Whys analysis (Correct answer)
- Value stream mapping
- FIFO queue management
Correct answer: 5 Whys analysis
The 5 Whys technique iteratively asks why a defect occurred until the root cause is identified, making it ideal for diagnosing recurring measurement errors.
Question 3: Under a QC checklist system for CEAC field assessments, what is the primary purpose of a 'sign-off' step by a second consultant?
- To speed up report delivery timelines
- To ensure an independent review catches omissions or measurement discrepancies (Correct answer)
- To reduce the number of site visits required
- To satisfy billing requirements for the client
Correct answer: To ensure an independent review catches omissions or measurement discrepancies
A secondary sign-off provides an independent check that prevents errors from reaching the final report, upholding the accuracy standards required for accessibility compliance work.
Question 4: A CEAC consultant notices that 20% of submitted transition strip measurements are consistently 0.25 inches above actual field conditions. This is BEST described as:
- Random measurement error
- Systematic bias in the measurement process (Correct answer)
- An acceptable margin of error within tolerances
- A data entry formatting issue
Correct answer: Systematic bias in the measurement process
A consistent directional offset across many measurements indicates systematic bias, likely from a calibration error or procedural flaw rather than random variation.
Question 5: Which statistical method is most appropriate for monitoring whether a batch of ramp slope measurements remains within ADA compliance limits over time?
- Pareto chart
- Control chart (SPC) (Correct answer)
- Scatter plot correlation analysis
- Histogram frequency distribution
Correct answer: Control chart (SPC)
Statistical process control (SPC) control charts track measurements over time and signal when a process drifts outside acceptable limits.
Question 6: During a process improvement initiative, a consulting firm discovers that 80% of report errors stem from 3 of 15 checklist items. This finding reflects which quality principle?
- Six Sigma DMAIC
- Poka-yoke error-proofing
- The Pareto principle (80/20 rule) (Correct answer)
- Plan-Do-Check-Act (PDCA)
Correct answer: The Pareto principle (80/20 rule)
The Pareto principle states that roughly 80% of effects come from 20% of causes, directing improvement efforts toward the highest-impact defect sources.
Question 7: A firm implements a mandatory photo-documentation protocol for every accessible parking space measured. This is an example of which quality improvement concept?
- Benchmarking against industry peers
- Error-proofing (poka-yoke) through objective evidence capture (Correct answer)
- Continuous improvement through employee suggestion systems
- Reduction of cycle time in field assessments
Correct answer: Error-proofing (poka-yoke) through objective evidence capture
Requiring photographic evidence at each measurement point error-proofs the process by creating an objective record that can verify or dispute field data.
CEAC Quality Control & Process Improvement 2
When conducting a QC audit of accessibility documentation, which discrepancy is MOST critical to flag?