RCA RCA Tools and Techniques 2

Question 1

In a Control Chart, what do points falling outside the control limits indicate?

Accepted Answer

A special cause of variation that requires investigation

Answer

Points outside control limits signal special-cause variation, indicating an unusual event that warrants RCA investigation.

Question 2

Which RCA technique involves breaking a problem into smaller components using a top-down tree structure?

Accepted Answer

Fault Tree Analysis

Answer

Fault Tree Analysis decomposes a top-level undesired event into lower-level causes using a branching tree structure.

Question 3

What is the main advantage of using the Fishbone Diagram over the 5 Whys technique?

Accepted Answer

It organizes multiple categories of causes simultaneously

Answer

The Fishbone Diagram groups causes into categories (e.g., People, Process, Equipment) allowing teams to explore many potential causes simultaneously.

Question 4

In FMEA, what does 'RPN' stand for?

Accepted Answer

Risk Priority Number

Answer

RPN (Risk Priority Number) is calculated by multiplying Severity, Occurrence, and Detection scores to prioritize failure modes in FMEA.

Question 5

Which RCA tool is most appropriate when causes fall into natural groupings or themes?

Accepted Answer

Affinity Diagram

Answer

An Affinity Diagram organizes a large amount of brainstormed ideas or data into natural groupings based on their relationships.

RCA - Root Cause Analysis Practice Test