Lean Six Sigma Yellow Belt Certification Prep 5

Question 1

Which tool is MOST appropriate for prioritizing which problems to solve when resources are limited?

Accepted Answer

Pareto chart applying the 80/20 rule

Answer

A Pareto chart identifies the 'vital few' causes responsible for the majority of defects, enabling teams to focus limited resources for maximum impact.

Question 2

A process with Cpk = 0.5 indicates:

Accepted Answer

The process is not capable and produces many defects outside specification limits

Answer

Cpk < 1.0 means the process is not capable; Cpk = 0.5 indicates the process is significantly off-center or too variable relative to specifications.

Question 3

In the 5S methodology, what does the second 'S' (Seiton) mean?

Accepted Answer

Set in order — arrange tools and materials for efficient access

Answer

Seiton (Set in Order) means organizing remaining items so everything has a designated place, reducing search time and enabling visual management.

Question 4

A run chart shows 8 consecutive data points all above the process mean. This is an example of:

Accepted Answer

A signal of special cause variation requiring investigation

Answer

The 'rule of eight' states that 8 or more consecutive points on one side of the center line signal a non-random pattern indicating special cause variation.

Question 5

What is the main goal of the Control phase in DMAIC?

Accepted Answer

To sustain the improvements achieved and prevent the process from reverting to old behavior

Answer

The Control phase institutionalizes improvements through control plans, standard operating procedures, and monitoring systems to sustain gains long-term.

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Prep 5