Project Risk Management Quality Control & Assurance 3

Question 1

A Pareto chart reveals that 3 defect types account for 78% of all quality failures. What is the recommended project management response?

Accepted Answer

Focus corrective action on the 3 dominant defect types first

Answer

The Pareto principle (80/20 rule) guides teams to prioritize the vital few causes that produce the majority of defects for maximum improvement impact.

Question 2

What is the key difference between quality assurance (QA) and quality control (QC)?

Accepted Answer

QA is a proactive process-oriented activity; QC is a reactive product inspection activity

Answer

QA proactively audits processes to prevent defects, while QC reactively inspects deliverables to identify defects in outputs.

Question 3

A project uses statistical sampling to inspect incoming materials. If the acceptable quality level (AQL) is set too high, what is the primary risk?

Accepted Answer

Higher probability of accepting non-conforming materials

Answer

A high AQL means a greater percentage of defects is considered acceptable, increasing the risk that non-conforming materials pass inspection and enter the project.

Question 4

Which quality cost category includes rework, scrap, and warranty claims?

Accepted Answer

External failure costs

Answer

External failure costs occur after the product reaches the customer and include warranty repairs, returns, and liability costs, which are the most expensive quality failures.

Question 5

A scatter diagram shows a strong positive correlation between two variables in a manufacturing project. What conclusion can be drawn?

Accepted Answer

As one variable increases, the other tends to increase as well

Answer

A scatter diagram shows correlation (the tendency for variables to move together), but correlation does not establish causation — further analysis is needed.

Project Risk Management Practice Test

Project Risk Management Practice Test

Project Risk Management Quality Control & Assurance 3