Six Sigma Green Belt Readiness: Lead a DMAIC Project and Handle the Exam's Statistics
Signature Course No. 352 — A Signature AI Socratic Coaching Course.
No experience needed — your coach starts where you are.
A New Kind of Learning
Socratic coaching, delivered by an agentic AI coach.
Not a course you watch. An AI coach you work with.
The Lighthouse Coach begins by discovering how you think about the subject, teaches what is missing, and gives you realistic practice before asking you to prove that you can use it. You may test out of concepts you already understand, while capstones turn the learning into a practical plan, decision, conversation, or other real-world result.
The curriculum is deliberately authored; the AI delivers it through coaching. It is not an AI randomly generating lessons.
A coach that teaches by asking — not by lecturing
The Lighthouse Coach is an AI Socratic coach built on Cognosco Learning's Six Sigma Green Belt Readiness: Lead a DMAIC Project and Handle the Exam's Statistics course, in the Frontline & Industry Leadership category. It does not play videos at you. It holds a conversation: it asks you a question, listens to your answer, names the misconception it hears, affirms what you got right, and asks the next question — the way a great coach works in the room.
Readiness, stated honestly, is the whole offer. This course is aligned to the published Green Belt bodies of knowledge — the topic families published by ASQ and by IASSC — and alignment is not endorsement: neither body endorses this course, completing it awards no credential, and no page promises an examination result. What it builds is the person the examinations test for: a Green Belt who can lead a chartered DMAIC project end to end and defend every number on the way.
It starts with ownership. A practitioner assists on a project; a Green Belt leads one — owns the charter, defends the baseline, chooses the analysis, answers at each tollgate, and remains accountable for whether the gain held. The statistics are weighted heavily because they are where an unready leader is easiest to catch: anyone can say the process improved; a Green Belt shows by how much, with what uncertainty, against which baseline, measured how.
It works in two movements. First, Module 1 — Charter, Measure, and State the Baseline — work through Concepts 1–9, finishing with The Baseline You Can Defend; then, Module 2 — Analyze, Improve, Control, and Prove Readiness — work through Concepts 10–18, finishing with Lead It Through and Hold It.
Both capstones produce real artifacts — a baseline dossier a sponsor can sign, built on Pellham Packaging's Line 3 census: 4,000 trays, 320 defects, 260 defective trays, four opportunities per tray, every figure derived on the page; and a completed project record with a control plan and a readiness self-audit, its benefits re-derived from the validation counts on the charter's own assumptions.
Every figure recomputes. The statistics are the spine of the course, held to one rule: every capability index, test statistic, interval, control limit, and sigma level is derived from stated inputs by arithmetic shown in the open, so you can rebuild it with a pencil. A Green Belt who quotes a statistic he cannot rebuild does not own the statistic — and this course builds owners.
The course is self-paced and always on — roughly 30 minutes per concept, about 9 hours in full, taken in as many sittings as you like. You can type your answers, or talk out loud: the Voice Coach speaks its questions and listens to your spoken replies. Learners who already know the material can test out concept by concept.
Six Sigma Green Belt Readiness: Lead a DMAIC Project and Handle the Exam's Statistics is part of The Lighthouse Signature Series — the online counterpart to the one-day, in-person learning Cognosco Learning has delivered since 2002.
Course Facts
One full concept, coached end to end — free: verify your email and we’ll send you a link to start.
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Diagnose → Learn & Practice → Prove → Capstone
Every learner moves through the same discipline a Cognosco instructor would insist on in the room.
Diagnose
The Coach starts where the course starts: with ownership. Recall an improvement effort you have seen and say who owned the evidence — who would have been answerable if the claimed gain turned out to be a measurement artifact; work the case of a sponsor who tells you, before Measure begins, that the project ‘needs to show’ a particular saving, and name the role boundary being pressed; and name the family in the body of knowledge you least want to be tested on today, and the recent work that judgment rests on. Every concept opens with three questions that locate where you actually stand, and your answers shape how deeply the Coach works the concept with you. Everyone begins with Module 1 — no skipping the foundations you only think you have.
Learn & Practice
Work each concept in conversation with the Coach — spoken or written — then practice it against realistic situations until it holds up.
Prove
Every concept ends in proof: answer the check cold and demonstrate the skill. Know it already? Test out and take credit immediately.
Capstone
Finish with two capstones — The Baseline You Can Defend for Module 1 and Lead It Through and Hold It for Module 2 — that pull the whole course together, and earn the certificate.
What You'll Learn
Charter it, measure it, prove it, hold it. Every skill in this course is the DMAIC arc at Green Belt altitude: Define fixes the problem in the customer's terms, Measure proves the numbers can be trusted, Analyze separates proven causes from suspects, Improve changes only what the evidence indicts, and Control hands the process a chart, a reaction rule, and a named owner.
Module 1 builds the defensible baseline. The Green Belt mandate and the charter as arithmetic; CTQs separated from control limits without error; sampling and measurement systems validated before a single count is believed; the baseline family — DPU, DPMO, yields, sigma level — derived from raw counts; capability in short-term and long-term form; and control charts constructed, not merely read.
Module 2 proves causes and holds the gain. The logic of a test and the tests themselves — means, proportions, categories, many means — with intervals beside every verdict; regression read without self-deception; a factorial experiment that separates what observation tangles; solutions piloted against proven causes; a control plan an owner can run; and the close, with benefits re-derived and readiness audited honestly.
And it holds its boundary throughout. This course builds strictly above the practitioner method of Signature Course No. 245 and does not re-teach it at length; Black Belt depth — advanced experimental designs, multivariate methods, reliability engineering — is named as beyond Green Belt scope rather than skimmed. Examination logistics change; verify them against the certifying body's current publication before you book.
What you will learn
- Charter and govern a DMAIC project end to end, with a business case stated as recomputable arithmetic
- Translate customer requirements into measurable CTQs and distinguish specification limits from control limits without error
- Design data collection and sampling, and validate a measurement system with Gage R&R and agreement studies read correctly
- Describe process data with the right summaries and distribution checks, and state a baseline in DPMO, yield, and sigma level that recomputes
- Compute and interpret Cp, Cpk, Pp, and Ppk, and prescribe the remedy each pattern demands
- Choose, run, and read hypothesis tests for means, proportions, categories, and multiple groups — including what a result does not prove
- Build and interpret regression models, and design a small factorial experiment that separates effects observation cannot
- Select, pilot, and risk-check solutions, then build a control plan and close the project with validated benefits and an honest readiness self-audit
Everything in the course
- All 18 concepts of Six Sigma Green Belt Readiness: Lead a DMAIC Project and Handle the Exam's Statistics, in 2 modules
- A starting-point check first — the Coach finds where you actually stand before teaching
- Learn, Practice, Prove for every concept — no passive video watching
- A test-out on every concept: prove you know it and move on
- The Voice Coach: talk with the Coach out loud — it speaks, listens, and replies
- A personal Learner Record of your work across the course
- Two capstone exercises: The Baseline You Can Defend and Lead It Through and Hold It
- A printable session summary whenever you pause
- The Lighthouse Coach completion certificate (Signature Series)
- Your progress is saved as you go — stop anytime, resume where you left off
Built for professionals who lead improvement work
Aspiring Green Belts — practitioners preparing for a Green Belt examination with ASQ, IASSC, or an equivalent body, who need the full body of knowledge taught as project work rather than as a glossary; and project leaders and quality engineers who already run improvement work and need the statistical depth their role keeps demanding.
Team members moving up from Yellow Belt or practitioner level — including graduates of No. 245 — who can run the basic method and now need to lead, not assist.
Managers who sponsor DMAIC projects — who need to read a Green Belt's evidence critically: to spot a capability index quoted on an unstable process, a p-value read backwards, or a control plan with no reaction rule. This course assumes No. 245-level fluency or equivalent working experience, and comfort with arithmetic, percentages, and a calculator; it assumes no prior inferential statistics.
Prefer to learn live and in person? The same material anchors Cognosco's one-day programs — browse the in-person catalog.
Start with The Green Belt Mandate
$195 — introductory price. One payment. No subscription, no password to manage.
Here is exactly what happens when you enroll:
- Pay securely with Stripe — you are taken straight into the course
- Create your learner profile and begin the Module 1 starting-point check
- Save the access key you are given — it restores your enrollment on any device
- Learn at your pace; your progress is stored in your browser on your device
For the full voice experience, use Chrome and allow the microphone when asked. Typing your answers works everywhere, all the time. Questions before you enroll? Email hello@cognoscolearning.com.
Before you enroll
What is a Socratic coaching session?
A conversation, not a video. Your coach asks a question; you answer — out loud by voice, or by typing — and the coach responds to what you said: naming the misconception it hears, affirming what you got right, and asking the next question. You advance only when you have mastered each concept, so a finished course means the learning held.
How long does it take — and how long do I have?
About 30 minutes per concept. Learn in sittings of any length; your progress is saved as you go. You have a full year from purchase to finish, and you can revisit and retake within that year.
What does the certificate verify?
That you completed every concept and both capstones of this course. Anyone can confirm a Cognosco certificate online — enter its certificate ID on our verification page.
What if it isn't for me — what are the refunds?
If you have not started, cancel for a full refund within seven days of purchase. Once you have started, there is no cash refund — stop before finishing and we credit the full amount you paid toward any other course in the library (credit valid one year from your original purchase). Once you complete the course, no refund or credit applies.
More Signature Courses are coming
Six Sigma Green Belt Readiness: Lead a DMAIC Project and Handle the Exam's Statistics is Signature Course No. 352. Leave your email and we'll send you news of future Signature Courses and Lighthouse updates as they are announced — nothing else.