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ICYB Exam Questions & Answers

IASSC Certified Lean Six Sigma Yellow Belt  •  IASSC

120 Questions 240 min Updated Sep 2026 99% Pass Rate
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Sample ICYB Questions

Practice with real exam-style questions, each with the verified correct answer and explanation.

Q1 MultipleChoice

A key metric in Six Sigma is the DPMO which stands for __________________?

Correct Answer: C
Q2 MultipleChoice

The DMAIC approach to problem solving stands for Define, __________, Analyze, Improve and Control.

Correct Answer: B
Q3 MultipleChoice

To reduce the people or operator introduced defects into a process it is best if a Belt can design and implement a means of ________________ into the process.

Correct Answer: C
Q4 MultipleChoice

A ______________ is a graphical presentation of sample data that shows the number of times that a data point is a specific number.

Correct Answer: B
Q5 MultipleChoice

As we conceive and define a LSS project one of the overriding things we hope to accomplish is to reduce the _____________________.

Correct Answer: D

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Frequently Asked Questions

The ICYB is a professional certification offered by the International Association for Six Sigma Certification (IASSC) that validates foundational knowledge of Lean Six Sigma methodologies. It is designed for professionals who support improvement projects and need to understand basic process improvement concepts without leading projects independently.

IASSC does not have strict formal prerequisites for the Yellow Belt exam, making it accessible to professionals at any career level. However, it is recommended that candidates have basic knowledge of process improvement concepts or complete a Yellow Belt training course before attempting the exam.

The ICYB exam consists of 60 multiple-choice questions and must be completed within 90 minutes. A passing score is typically 70% or higher, though candidates should verify current passing requirements with IASSC.

The exam covers fundamental Lean Six Sigma concepts including DMAIC methodology, basic statistics, process mapping, root cause analysis, and improvement tools. It also includes foundational knowledge of Lean principles and how to support project teams in implementing process improvements.

IASSC exam fees vary by testing provider and location, typically ranging from $200 to $395 for the Yellow Belt exam. The certification is valid for three years from the date of issue, after which candidates can renew by retaking the exam or completing continuing education requirements.
Exam Details
  • Exam CodeICYB
  • VendorIASSC
  • Total Questions120
  • Duration240 min
  • LanguageEnglish
  • Last UpdatedSep 2, 2026
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