About the ASQ CSSYB Exam

ASQ Certified Six Sigma Yellow Belt CSSYB

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1 Introduction & Exam Overview

About the ASQ CSSYB Exam How to Use This Study Guide

2 Chapter 1: Six Sigma & Lean Fundamentals

1.1 Six Sigma Foundations, Principles & History 1.2 Lean Foundations, Principles & The 8 Wastes 1.3 Six Sigma Roles & Responsibilities

3 Chapter 2: Team Basics & Dynamics

2.1 Team Types & Stages of Team Evolution 2.2 Team Decision-Making & Idea Generation Tools 2.3 Communication Methods & Meeting Management

4 Chapter 3: Quality Tools & Six Sigma Metrics

3.1 The 7 Basic Quality Tools 3.2 Six Sigma Process Performance Metrics & COPQ

5 Chapter 4: Define Phase — Project Identification & Scope

4.1 Voice of the Customer (VOC) & Critical-to-Quality (CTQ) 4.2 Project Selection & Stakeholder Analysis 4.3 Process Definition with SIPOC & Supply Chain Basics

6 Chapter 5: Define Phase — Project Management Basics

5.1 The Project Charter & Problem Statements 5.2 Project Planning: WBS, Gantt Charts & Communication Plans 5.3 Project Management Tools & Tollgate Reviews

7 Chapter 6: Measure Phase — Data Collection & Statistics

6.1 Basic Statistics: Central Tendency & Dispersion 6.2 Data Types & Classification 6.3 Data Collection Plans, Operational Definitions & Sampling 6.4 Data Collection Techniques: Check Sheets, Checklists, Surveys & Interviews

8 Chapter 7: Measure Phase — Measurement System Analysis

7.1 Measurement System Fundamentals: Precision, Accuracy & Bias 7.2 Gauge Repeatability & Reproducibility (GR&R)

9 Chapter 8: Analyze Phase — Process & Root Cause Analysis

8.1 Process Analysis: 5S & Value Analysis 8.2 Failure Mode and Effects Analysis (FMEA) 8.3 Root Cause Analysis: 5 Whys, Process Mapping, 8D, Force-Field & Matrix Charts

10 Chapter 9: Analyze Phase — Corrective Action & Variation

9.1 Corrective & Preventive Action Processes 9.2 Common Cause vs Special Cause Variation 9.3 Basic Distribution Types: Normal, Binomial & Poisson

11 Chapter 10: Analyze Phase — Relationships & Hypothesis Testing

10.1 Correlation & Scatter Plots 10.2 Simple Linear Regression & Prediction 10.3 Hypothesis Testing Concepts: Hypotheses, Errors & P-Values

12 Chapter 11: Improve Phase — Implementation Techniques

11.1 Kaizen & Kaizen Blitz Events 11.2 Plan-Do-Check-Act (PDCA) & Solution Selection 11.3 Cost-Benefit Analysis & Financial Validation

13 Chapter 12: Control Phase — Sustaining Improvements

12.1 Control Plans & Process Monitoring 12.2 Statistical Process Control: X-bar & R Charts 12.3 Document Control, Standard Operating Procedures & Project Hand-off

About the ASQ CSSYB Exam

Key Takeaways Explain This Topic AI

The ASQ CSSYB exam consists of 90 multiple-choice questions (80 scored, 10 unscored pretest items) administered over 2 hours and 18 minutes.

A scaled passing score of 550 out of 750 points is required to achieve certification under criterion-referenced scoring standards.

The examination follows an open-book policy allowing only bound physical reference books and binders; loose papers and electronic devices are strictly prohibited.

The CSSYB credential has no prerequisites for prior work experience or education and awards a lifetime certification that never requires recertification.

The exam evaluates five core domains, led by Six Sigma Fundamentals (25%) and the Analyze Phase (21.25%).

Last updated: September 2026

About the ASQ CSSYB Exam

Quick Answer: The ASQ Certified Six Sigma Yellow Belt (CSSYB) is a 90-question, computer-based exam administered through Prometric testing facilities or remote proctoring. Candidates receive 2 hours and 18 minutes of testing time within a 2.5-hour appointment. The exam contains 80 scored questions and 10 unscored pretest questions, requiring a scaled passing score of 550 out of 750 points. The 2026 fee is $434 ($334 for ASQ members; $234 for a retake), and ASQ reported an 83% CSSYB pass rate for 2024. As an open-book exam allowing bound physical reference materials, the CSSYB validates foundational proficiency across the five Six Sigma Body of Knowledge domains, requires no degree or experience prerequisites, and awards a lifetime credential that never expires.

Professional Role and Value of the Yellow Belt

The Six Sigma Yellow Belt serves as an operational bridge between frontline processes and continuous improvement leadership. Organizations cannot rely solely on full-time Black Belts or part-time Green Belts to identify waste and collect measurements; frontline staff understand daily workflows most intimately. The Yellow Belt designation certifies that a practitioner understands Lean and Six Sigma fundamentals, comprehends the DMAIC (Define, Measure, Analyze, Improve, Control) cycle, and executes tactical project duties.

Yellow Belts operate in two key capacities:

Project Team Members: Yellow Belts support project leaders by mapping workflows, collecting baseline data, constructing SIPOC diagrams, and assisting with root-cause identification using basic quality tools.

Local Kaizen Contributors: Yellow Belts run localized improvement tasks, including 5S workplace organization, waste elimination, and visual controls within their work areas.

Earning the CSSYB signals that a professional understands quality culture, speaks a shared continuous improvement vocabulary, and drives defect reduction across industries.

Exam Logistics, Question Counts, and Timing

The CSSYB examination is administered through Prometric test centers and secure remote proctoring:

• Parameter Specification
• Total Test Items 90 multiple-choice questions
• Scored Questions 80 questions evaluated toward score
• Unscored Items 10 pretest questions (unidentified)
• Testing Time 2 hours 18 minutes (138 minutes)
• Appointment Duration 2 hours 30 minutes (150 minutes total)
• Passing Score Scaled score 550 / 750 points

Delivery Mode Prometric test center or ProProctor remote proctoring (a paper-and-pencil form has 80 questions in 2 hours)

• Reference Policy Open-book (bound physical references only)
• Credential Validity Lifetime certification (no renewal needed)
• Examination Fees $434 list / $334 ASQ member / $234 retake (2026 ASQ application)
• Published Pass Rate 80% (2022), 81% (2023), 83% (2024), per ASQ

The 10 unscored pretest questions evaluate item performance for future forms. Examinees must treat every question as scored. With 138 minutes for 90 questions, candidates have approximately 92 seconds (1.5 minutes) per question.

Testing Windows, Scheduling, and Results

Computer-based CSSYB exams are scheduled inside ASQ testing windows , and you choose a window when you apply. In late September 2026, ASQ listed a November 1–30, 2026 window (application deadline October 12, 2026), a January 1–31, 2027 window (deadline December 7, 2026), and a March 1–31, 2027 window (deadline February 8, 2027). Applications received after a deadline move to the next window, so check asq.org/cert for the current calendar before you plan your study schedule.

Application review: ASQ reviews online applications in 1–2 business days (3–5 for paper applications). If you are approved, an eligibility email with Prometric scheduling instructions follows 1–2 business days later. Because CSSYB has no education or experience requirement, approval is normally routine; an application refused for eligibility is refunded minus a $130 processing fee.

Scheduling changes: You must reschedule or cancel at least five days before your appointment, and ASQ charges $130 to change an appointment. Missing the appointment forfeits the fees.

Exam day: Arrive 30 minutes early at a test center, with one valid government-issued photo ID that has a signature and matches the name on your application. Remote candidates use Prometric's ProProctor system and should run the system check in advance; failing to launch or finish because of your own connection costs a $130 reschedule fee.

Results: Computer-based candidates see a preliminary pass/fail result on screen as soon as they submit. ASQ's results FAQ says official results are emailed within 7 days, and passing candidates then receive a digital badge through Accredible.

Retakes: There is no limit on attempts. Each retake is billed at the $234 retake rate if you retest within two years of your last attempt, but you cannot retake in the same testing window as your previous attempt.

Open-Book Reference Rules and Prohibited Materials

The CSSYB is an open-book exam under strict reference security rules during check-in:

Permitted Materials: All references, including your own notes, must be bound and stay bound. ASQ accepts permanently bound books (stitched or glued) and pages held by fasteners that go through every sheet, such as ring binders, spiral binders, plastic snap binders, brads, or screw posts. The Test Center Administrator inspects every reference before you enter the room.

Prohibited Items: Hand-stapled documents that are not secured in a cover, unbound notes, unbound or blank writing tablets, and slide or wheel charts are not allowed. Sticky notes are permitted only as book tabs attached before you arrive. Prometric supplies scratch paper and pencils.

Calculators & Devices: Every computer-based exam includes an on-screen basic scientific calculator, and test centers can provide a hand-held basic calculator on request. You may bring any silent, battery-operated calculator with no programmable memory; programmable models such as the TI-89 are not allowed. Phones and other personal items go in the Prometric locker.

Scoring System and Criterion-Referenced Standards

The CSSYB uses criterion-referenced scoring rather than grading on a curve. Candidates are evaluated against an objective competence standard. ASQ sets the raw cut score with a Modified Angoff study, in which a panel of 12 to 15 subject matter experts estimates how a borderline candidate would perform on each question. Your raw score (the number of correct answers on the 80 scored items) is converted to a scaled score, and you need 550 points out of a possible 750 . Common-item equating adjusts for small difficulty differences between forms, so a harder form requires fewer correct answers. ASQ does not report scaled scores to passing candidates. Candidates who fail can review the number of correct and incorrect answers in each BoK subtopic in their ASQ account. The CSSYB does not expire and requires no recertification units.

The Five Body of Knowledge Domains

The CSSYB assesses knowledge across five distinct domains:

• Domain Focus Area Weight Scored Items
• I. Six Sigma Fundamentals Origins, Lean concepts, quality tools, team dynamics, metrics 25.00% 20 questions
• II. Define Phase Project charter, VOC, CTQ trees, SIPOC, project management tools 17.50% 14 questions

III. Measure Phase Basic statistics, data collection techniques, measurement system analysis (MSA) 18.75% 15 questions

IV. Analyze Phase Process analysis, root cause tools, FMEA, variation, basic hypothesis concepts 21.25% 17 questions

V. Improve & Control Phases Kaizen blitz, PDCA, solution selection, control plans, SPC fundamentals 17.50% 14 questions

• Total Comprehensive Six Sigma Yellow Belt Scope 100.00% 80 questions
• Six Sigma Belt Hierarchy and Role Comparison

To understand the Yellow Belt role in organizational quality, review the Five-Tier Belt structure:

• Belt Level Typical Role Typical Project Time ASQ Eligibility Requirement ASQ Recertification
• White Belt Awareness of improvement terms Ad hoc No ASQ certification exam Not applicable

Yellow Belt (CSSYB) Team member, data collector, kaizen participant 5%–10% None (no education or experience required) None; lifetime

Green Belt (CSSGB) Part-time leader of departmental DMAIC projects 20%–50% 3 years of full-time, paid work experience in the CSSGB BoK None; lifetime

Black Belt (CSSBB) Full-time leader of cross-functional projects and coach About 100% 3 years of experience plus 1 completed project with a signed affidavit, or 2 completed projects Every 3 years

Master Black Belt (CMBB) Program strategist, trainer, and advisor About 100% Current CSSBB plus a portfolio review showing 5 years as a Black Belt or Master Black Belt, or 10 completed Black Belt projects Every 3 years