Lean Six Sigma Yellow Belt Certification FREE Lean Six Sigma Yellow Belt Root Cause Analysis Questions and Answers 2

Question 1

Which root cause analysis tool uses repeated questioning to drill down from a symptom to its underlying cause?

Accepted Answer

5 Whys

Answer

Pareto Chart

Answer

Control Chart

Answer

SIPOC Diagram

Question 2

In a Cause-and-Effect diagram, what does the 'head' of the fish represent?

Accepted Answer

The effect or problem

Answer

The root cause

Answer

The category of causes

Answer

The corrective action

Question 3

What is a key limitation of the 5 Whys technique?

Accepted Answer

It can follow only one causal path at a time

Answer

It requires statistical software

Answer

It cannot be used in manufacturing

Answer

It must always reach exactly five levels

Question 4

Which category is NOT one of the traditional 6Ms used in an Ishikawa diagram?

Accepted Answer

Money

Answer

Manpower

Answer

Machine

Answer

Method

Question 5

What is the primary purpose of a fault tree analysis in root cause analysis?

Accepted Answer

To map logical relationships between failures and their causes

Answer

To assign blame to individuals

Answer

To calculate production costs

Answer

To schedule preventive maintenance

Question 6

After identifying a root cause, what should be verified before implementing a corrective action?

Accepted Answer

That the cause, when removed, actually prevents recurrence of the problem

Answer

That the cause was documented in a Pareto chart

Answer

That at least five team members agree on the cause

Answer

That the cause appears in the control plan