Lean Six Sigma Yellow Belt Certification Trivia 3

Question 1

Which of the 8 Lean wastes refers to producing more than what is needed or before it is needed?

Accepted Answer

Overproduction

Answer

Overproduction is considered the worst of the 8 Lean wastes because it generates and hides all other wastes such as excess inventory and unnecessary transportation.

Question 2

In Six Sigma, a process operating at 'Six Sigma' quality level produces approximately how many defects per million opportunities?

Accepted Answer

3.4

Answer

A Six Sigma process produces no more than 3.4 defects per million opportunities (DPMO), accounting for a 1.5 sigma shift in the mean.

Question 3

What is the purpose of a 'fishbone diagram' (Ishikawa diagram) in Lean Six Sigma?

Accepted Answer

Identify and organize potential causes of a problem

Answer

The fishbone (Ishikawa) diagram visually organizes potential causes of a problem into categories, helping teams identify root causes through structured brainstorming.

Question 4

What does 'DPMO' stand for in Six Sigma metrics?

Accepted Answer

Defects Per Million Opportunities

Answer

DPMO stands for Defects Per Million Opportunities and is the standard metric used to express process quality level in Six Sigma.

Question 5

In Lean, which concept describes producing exactly what the next process needs, when it needs it?

Accepted Answer

Pull system

Answer

A pull system produces items only when signaled by downstream demand, reducing inventory and overproduction — the opposite of a push system.

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Trivia 3