Lean Six Sigma path · DMAIC · root cause
Lean Six Sigma for the problem that won't quit. Prove the cause with data. Keep it fixed.Turn a scrap problem into signed savings. Then keep the fix holding after you move on.AI will hand you a Cpk in seconds. Be the one who knows if it means anything.
Price a scrap problem, prove its cause with data and hold the gain with DMAIC. Then work the 8D and the root cause tools that stop the repeat corrective action, with Coach Q beside you on your own problems.
For process and quality engineers and improvement leads.
- 4 live courses, in order
- 8 more on the way
- Step 1: about 16 hours
- Coach Q in every course
The AI says our Cpk is 0.80. Can I put that in the report?
Not yet. Look at the control chart first. If subgroups sit outside the limits, no capability number describes this process.
Sound familiar?
If you're the one who fixes problems, you've heard these.
Good work. Nobody upstairs noticed.
A fix with no dollar figure stays invisible. In Green Belt you price the problem from scrap tags, rework logs and time sheets, then report net savings finance validated, on a one-page A3 that leads with the money.
Run a Cpk on last month's readings. Put it in the charter.
A caliper that reads in 10 µm steps can't see a 40 µm tolerance, and an unstable process has no capability number yet. Green Belt has you run the gauge study and the control chart before anyone quotes a Cpk.
Retrain the operator. Again.
Three CARs, three operators, the same fix. When the corrective action names a person, the cause is still sitting in the process. Root Cause and CAPA pushes your 5-Why past operator error to something you can change.
It closed. Then it came back.
Recurrence means the corrective action didn't work. Root Cause and CAPA has you set success criteria and a verification window before the fix goes in, and close only when the data says it held.
What it does for you
Become the one they bring the hard problems to.
Numbers nobody has to take on faith
Your cost figure traces to scrap tags and rework logs. Your cause was switched on and off. Your capability number came from a stable process and a gauge that passed its study.
An 8D your customer's reviewer can follow
Containment inside the clock, a D2 anyone can check, and every candidate cause kept or killed with data. That's what the reviewer looks for, and it's what you'll learn to write.
Proof for your next review
Nobody honest can promise a raise. You'll have what that conversation runs on: a problem you priced, a cause you proved and savings finance validated, on a one-page A3.
No course can promise you a raise or a title. What you'll have is the skill, the work to show for it and a certificate anyone can verify. That's what those conversations run on.
Why it matters
BLS projects fast growth for the engineers who improve processes.
Employment of industrial engineers, who collect data on processes and identify ways to improve productivity and quality, is projected to grow 12% from 2025 to 2035, much faster than the average for all occupations.
Among the duties BLS lists for the job: collect data on the process, analyze it for areas to improve, design the improvement and present it to management. Whatever your title, that's the work this path trains, with a gauge you've checked, a cause you've switched on and off, and savings finance validated.
For the company, it's the problem that won't quit: the same defect every quarter, a new operator's name on each CAR, scrap nobody has priced. Every repeat pays for the sort, the scrap and the premium freight again, until someone proves the cause and builds a control that holds.
The full path
From a priced problem to a fix that stays fixed.
Green Belt comes first for the method and the statistics, from the gauge check to the on/off test, then Root Cause and CAPA takes that rigor to the 8D your customer reads. Improve a Process Before You Automate It puts the same discipline in front of every automation proposal. Each course stands alone.
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Step 1 · Prove the cause and the savings
Lean Six Sigma Green Belt: The AI Results Leader
Work DMAIC on a fictional CNC shop's oversize bores: price the scrap, check the gauge, prove the cause on and off, pilot the fix and hold it with a control plan. A Master Black Belt scores your final case study.
You walk out with a chartered problem with a dollar figure, a baseline you can defend, a verified cause, a control plan with an owner, and a one-page A3 that leads with the money.
- About 16 hours
- Final exam
- Certificate anyone can verify
- Lesson 1 free
See what you get →The course page shows everything included, then the price.
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Step 2 · Stop the repeat corrective action
Root Cause Analysis & CAPA (AS13000)
Work the AS13000 8D from D0 to D8, test every candidate cause against the data, and push past operator error with fishbone, Is/Is-Not and a 5-Why that holds up to an audit. Then build the CAPA system around it.
You walk out with an 8D with a D2 anyone can check, a 5-Why with evidence at every step, effectiveness criteria set before the fix, and a 90-day CAPA plan.
- About 21 hours
- Certificate anyone can verify
- Lesson 1 free
See what you get →The course page shows everything included, then the price.
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Step 3 · Fix the process before you automate it
Improve a Process Before You Automate It
Follow one request process at a fictional field-service company: map the route people actually follow, split touch time from waiting and rework, test causes against records, decide what to automate and charter a pilot you can reverse. A person reviews your final case study.
You walk out with a current-state map, a time ladder, a future-state map with every human decision marked, a benefits ledger and a pilot charter with a way back.
- About 5 hours
- Final exam
- Certificate anyone can verify
- Lesson 1 free
See what you get →The course page shows everything included, then the price.
Step 4 · Read the numbers before anyone decides
Make Better Decisions with Workplace Data
Define a measure, clean the records without hiding anything, compare rates fairly, read a weekly chart with the run chart rules and recommend a step sized to the evidence. A reviewer scores your final case study.
You walk out with a metric card, a cleaning log, a weekly chart spec someone else can build, a six-part decision memo and an AI data review card.
- About 4 hours
- Final exam
- Certificate anyone can verify
- Lesson 1 free
See what you get →The course page shows everything included, then the price.
On the way in this path
More of the improvement toolkit is on the way, from SPC for the Shop Floor to Lean Six Sigma Black Belt, each with its own waitlist.
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On the way
Lean Six Sigma Yellow Belt
The improvement basics for every team member.
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On the way
SPC for the Shop Floor
Control charts an operator can read and act on.
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On the way
Kaizen and Value Stream Mapping
See the waste, then run the event that removes it.
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On the way
Cost of Poor Quality
Put a dollar figure on scrap, rework and escapes.
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On the way
Lean Six Sigma Black Belt
Lead the hard projects after Green Belt.
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On the way
Practical Data Analysis
Turn quality data into a decision someone can act on.
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On the way
FMEA and Control Plans
Find failure modes before they reach the customer.
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On the way
Measurement Systems and Gage R&R
Know whether your gage can tell good parts from bad.
Not like training used to be
Short, hands-on, built around you. And the coach stays.
Training used to mean days in a classroom or hours of video. Here are real screens from this path: short sessions where you make the call, a plan that fits your week, and an expert in your pocket in every course.
Coach Q · from Lean Six Sigma Green Belt: The AI Results Leader
Not yet. Look at the control chart first. If subgroups sit outside the control limits, the process isn't stable, and no capability number describes it.
Find what makes those subgroups different, remove that cause, then compute capability in the Toolkit on data from a stable process.
Which subgroups are outside the limits, and what time of day were they taken?
Coaching, not decisions. You make the call. Comes with every course, no renewal fee.
Study plan · Your personal trainer
Tell it your goal date. It builds sessions around your week and shows each day whether you're on plan, so the course actually gets finished.
Focus timer · 25 minutes, no tab-hopping
One click starts a focused session, and it follows you from lesson to lesson. Short sessions are how busy people finish.
Apply at work · Proof your boss can see
Log what you tried, what happened and how you know. Record your manager's sign-off with their name and date, and export the log for your performance review.
Built around you
Give the study plan your goal date and it sizes each session to your week. Coach Q works on the facts you bring from your own job, so the examples are yours, not a textbook's.
Hands-on, not hours of video
Lessons are built around calls you make: read the record, sort the evidence, catch the mistake. Checks and labs score you on the spot, and your first win comes in the first few minutes of lesson 1.
Stays with you. Stays current.
Coach Q doesn't leave when you finish. It comes with your course, no subscription and no renewal fee, so it's there for the next project, and the next 8D. When the rules behind this course change, we update the lessons and the coach's setup, and we move the coach to newer AI models as we test them.
What you walk out with
Working documents for your own company, not notes.
In Course Hub you pick a template and give Coach Q your facts. It drafts a first version. You edit it, and it's yours to keep and use.
Lean Six Sigma Green Belt: The AI Results Leader
- Project charterDraft with Coach Q
- Gage R&R study sheetDraft with Coach Q
- Hypothesis test logDraft with Coach Q
- Control plan with reaction planDraft with Coach Q
- A3 storyboardDraft with Coach Q
Root Cause Analysis & CAPA (AS13000)
- AS13000 8D Report TemplateDraft with Coach Q
- 5-Why Worksheet (Audit-Defensible Format)Draft with Coach Q
- Is/Is-Not Analysis WorksheetDraft with Coach Q
- CAPA Effectiveness Verification FormDraft with Coach Q
Improve a Process Before You Automate It
- Time ladderDraft with Coach Q
- Future-state mapDraft with Coach Q
- Benefits ledgerDraft with Coach Q
- Pilot charterDraft with Coach Q
Who built it
A Master Black Belt and a third-party registrar auditor.
AK Trikha and Will Trikha
Lean Six Sigma Master Black Belt · Founder and CEO, QMS Learning, and third-party registrar auditor
AK Trikha is a Lean Six Sigma Master Black Belt who has trained more than 50 organizations. He created the Green Belt course around one problem worked from the scrap bin to signed savings. A Master Black Belt scores every Green Belt final case study and every workplace project you submit.
Will Trikha teaches Root Cause and CAPA and Improve a Process Before You Automate It. He's a third-party registrar auditor with more than 20 years in aerospace and quality, and COO of PTX Defense, an AS9100D-certified aerospace manufacturer, so he lives with customer corrective action requirements from the supplier side. He has trained Lanner Electronics USA, Luna Innovations and Velocity Electronics in root cause analysis.
Check us before you pay
- Take lesson 1 free. The real first lesson of any course on the path, with Coach Q. No card.
- Look Will up. His LinkedIn profile lists the work behind the courses.
- Check a certificate. Every certificate can be confirmed at academy.qmslearning.com/verify.
- Keep your exit. 3 days after you buy a course to ask for a refund.
Try before you buy
Try it before you pay. Change your mind after.
Before you pay
Lesson 1 is free.
Every live course on the path has a free first lesson, with the exercises and Coach Q. Start with step 1 and judge it yourself.
Try lesson 1 free ↑After you buy
3 days to change your mind.
Email will@qmslearning.com within 3 days of buying a course for a refund. A refund ends access to that course. Refund policy
Company pays
Send it to your manager.
We wrote the email for you, with each course on the path and a link to what it includes. Need a quote or a PO? Email will@qmslearning.com.
Send this to my manager →Questions
Straight answers.
Do I have to take them all?
No. Each course stands on its own, with its own certificate, and lesson 1 is free on each. The path is the order we'd take them in.
What's the difference between DMAIC and an 8D?
An 8D responds to one specific defect. DMAIC improves a process that keeps producing too many defects. Root Cause and CAPA shows where one hands off to the other: a trigger you set, such as three or more 8Ds in one area in a rolling 12 months, starts a DMAIC evaluation.
Do I need statistics software?
No. Green Belt comes with the Green Belt Toolkit, a spreadsheet workbook with the formulas built in: capability, control charts, t-tests, ANOVA, regression, gauge studies and designed experiments. You work the key numbers by hand once, so you know what it's doing.
Do I need a project at work?
No. Green Belt's course case carries you to the certificate. When you have a workplace project, submit it within 12 months and a Master Black Belt reviews it. In Root Cause and CAPA, the exercises put the tools to work on problems from your own floor.
Is this an accredited certification?
No. Each course ends with a QMS Learning certificate anyone can verify at academy.qmslearning.com/verify. On Green Belt it also records your final case study, scored by a Master Black Belt, and your final exam. It isn't an ASQ or IASSC certification; sit their exams later if you want both.
Training a team?
Open any course on the path and pick how many people before you check out. Five or more people get 10% off every seat, applied at checkout. Each person gets their own login, private coach, study plan and certificate. More than 50 people, or need an invoice instead? Email will@qmslearning.com for a quote.
How long do I keep access?
The lessons are yours for life, and Coach Q comes with your course and stays with you after you finish. There's no subscription or renewal fee.
Does the course keep up when the rules change?
Yes, for the edition it teaches. When the rules or guidance behind this course change, we update the lessons and the coach's setup, and you get the update at no extra charge. When a new edition replaces the standard, we point you to the transition training. Your conversations with Coach Q aren't used to train AI models.
The Lean Six Sigma path
Start with Green Belt lesson 1, free: put a price on the scrap.
- Step 1: Lean Six Sigma Green Belt: The AI Results LeaderAbout 16 hours
- Step 2: Root Cause Analysis & CAPA (AS13000)About 21 hours
- Step 3: Improve a Process Before You Automate ItAbout 5 hours
- Step 4: Make Better Decisions with Workplace DataAbout 4 hours
Lessons for life. Coach Q comes with every course, no renewal fee.
Ready to buy? Pick a course from the path. Each course page shows everything included, then the price.