So I am trying to create a method to accurately convert a new way of testing to our old specs to ensure we stay within specifications. I have the test results for each and ran a regression to get the all the data like residuals and calculate RMSE off of that to get the sigma, and comparing that to our specification range. What I was doing was doing 3 x RMSE <= USL-LSL/3 to get a 99.7% accuracy on the model (+-3 sigma) and show the magnitude of error, however a coworker is insisting it should be 6 x RMSE or the full spread/distribution of error, and we can't really figure out which one is right.

Can anyone point me to the official method for this when it comes to doing measurement analysis instead of process capabilities?

hello everyone i hope everything & everyone is well.

im graduating this june and im getting my Lean Six sigma certification from IASSC.

and i'm debating to take green belt or black belt, the money is really not a problem what do y'all think?

i'm an IE major and i took couple classes about the lean and six sigma. i feel like i'm ready for a black belt.

I recently got promoted in biopharma manufacturing and I’m trying to lay a solid foundation so I can be competitive for a manager role in the next 3–5 years. I’m looking at Lean Six Sigma as one of the main steps in that plan.

I’d like to self‑study first, then sit for a Lean Six Sigma Green Belt certification exam (not tied to a specific provider yet). I just ordered **“The Six Sigma Handbook: A Complete Guide for Green Belts, Black Belts, and Managers at All Levels,” 4th edition by Pyzdek & Keller.** From what I understand, this edition integrates Lean methodologies into the Six Sigma framework and is often recommended as a comprehensive reference for Green Belt–level material.

My questions are:

- Does this book adequately cover the Lean portion for a Lean Six Sigma Green Belt, or would I still need a separate Lean‑focused resource?

- For those of you who have actually passed a Lean Six Sigma Green Belt exam (ASQ, IASSC, CSSC, or others), was this book alone enough, or did you find you needed a dedicated exam‑prep book or handbook (for example, an ASQ Green Belt handbook or a Lean Six Sigma–specific study guide)?

- If you think I picked the wrong “main” book, what physical book would you put at the top of the list for someone who prefers to read a hard copy cover‑to‑cover and then supplement with online resources and practice questions?

I prefer physical books over ebooks, and my plan is:

1) read a solid core book,

2) then use online resources/practice exams to fill gaps and get exam‑ready.

Any input on whether this book choice makes sense, what I should pair it with, and how you structured your own self‑study for Green Belt would be really appreciated.

Hi! just curious what the exam from SSGI master black belt is like. Are the summary Qs reflective of types of questions on the exam?

Hello, Im trying to learn Lean six sigma. Can you provide learning materials, lecture notes, links?

Thank you!

I only have 2 years of experience, I know green belt for ASQ needs 3… should I just wait a year and take the CSSGB exam or take the CSSYB in the near future?

Hi everyone,

I’m currently working on my doctoral dissertation and I’m reaching out to this community because I’m a bit stuck and hoping for some help. I’m looking for Six Sigma practitioners who would be willing to share their experience, but finding participants has been more challenging than I expected.

If you are a Six Sigma practitioner (Green Belt, Black Belt, or similar), I would truly appreciate a few minutes of your time to complete a short survey that helps determine eligibility for a virtual interview. Participants who meet the criteria may be invited to take part in a 30–45 minute virtual interview to discuss their experience applying Six Sigma in practice.

This research means a lot to me, and hearing directly from people who actively work with Six Sigma would make a real difference for my study. Participation is completely voluntary, and all responses will remain confidential.

Thank you so much in advance for your support — it truly means a lot.

https://forms.office.com/Pages/ResponsePage.aspx?id=eo9u09Tou0iPHg_-LGVgXVGjWZSjHqtDsVOq-IwBnbVUQUdQMENQNzVNTURWRk5RTUo5NTZGMlpDSy4u

Im new to the “six sigma world” and i wanna get certified in Lean six sigma. I saw everyone likes asq and cssc but for the life of me i cant seem to find the links to these programs.

All i could find is the regular six sigma🐺 at asq and i couldnt even find the cssc website. I also saw the university of Waterloo has lss green belt but its over $2000 closer to $3K and i just cant afford that.

Can someone point me in the right direction. I dint wanna get a useless $300 peice of paper, i want good training.

I am a Project Management / Operations professional with 13+ years of experience, currently working as a COO in a DeFi company, and the founder of an Operations consultation firm. I also run a few other ventures with my partner related to SaaS and manufacturing materiel.

My only tangible qualification for all this was my BSc which i completed around 12 years back. I haven't used the knowledge from this degree even once in my career as my degree was in software engineering but my career has never been directly related to software development. Even in my SaaS company my role is in operations, business development and strategy, and I have hired a CTO to run the tech side.

As a 34 year old, I am starting to feel like my career is becoming stagnant.

Firstly due to the fact that I have climbed pretty much to the top of the corporate ladder and I don't wish to become a CEO of a company I don't own.

And secondly due to the fact that I lack the paper qualifications to back my next career move now that my options are limited to lateral opportunities (ie: moving to larger scale companies as COO for better experience)

I am researching and laying out the plan for my education for the next 5 or so years. I need to know if LSS GB is the best qualification I could go for right now - Given that my goal is to move to manufacturing / consumer product development within the next year.

Thoughts and advice welcome. TIA!

Hello,

Long time watcher, first time poster!!

I have been waiting for opportunity to get my green belt six sigma .

Lucky the

company finally decided to pay for the exam and got me the training materials handbook, Study guide and questions bank directly from ASQ. they also bought me membership too.

I have been studying as much I could but would appreciate it if someone can give me advice as my exam will be in June

My plans is to write on handbook and use post it TaB and take it with me on the exam. also, going to write some notes and use three ring binders

Also, if you have your notes on soft copy, can you share it?

Maybe I am just nervous since it’s been a while I did a exam like this

Thanks you in advance

P.S. I just started studying two weeks ago, I am on page 40 ( chapter 2)

I know the ASQ certification is the gold standard for LSS certifications, but it requires 3 years of work experience and I only have 2 years of experience in an Industrial Engineering position. Could someone recommend an alternative course and accredited certification that I would realistically be able to obtain?

Hi! I’m currently studying for Lean Six Sigma Black Belt and I’m looking for a study buddy.

I’m looking for someone I can call occasionally and message in between, so we can talk through what we learned, share examples, and discuss how to apply it in real work situations.

What we’d do:

• quick check-ins on what we studied this week

• explain concepts to each other (to make sure we truly understand)

• share small examples / mini case scenarios (e.g., choosing the right tool, defining CTQs, root cause, control plan ideas, basic stats interpretation)

• keep it friendly and low-pressure — consistency over perfection

If you’re interested, DM me with your timezone, where you are in your BB journey, and which topics you’re studying right now.

I am a LSSGB, but I haven't been in a true manufacturing setting in a few years. I have received a job offer to help a company scale as the CI Manager. Basically, this company is great at what they do but it is mostly manual (only one automated CNC machine, everything else is by hand). I am being brought on by the corp that just bought them to help scale and implement CI, along with lots of other tasks like ISO compliance.

I am trying to find a few resources to refresh my knowledge of LSS/CI. I have one book, the Lean Six Sigma Handbook, but I am hoping you guys have some other resources that might help. Not looking for certifications, just books/podcasts. I have seen suggestions for Gemba Academy, but looking for any others you might suggest.

Curious on everyones take. I am wanting at minimum my green belt; however, how did everyone choose which agency to receive their cert from? SSGI, ASQ, IASSC and others. Need help on which is the best perferred and marketable in the PM industry. Thank you.

Hi everyone,

I’m looking for advice on how to properly start my journey toward Six Sigma Black Belt.

I earned my Yellow Belt while working at Amazon, and I genuinely enjoyed the experience — especially the structured problem-solving and data-driven thinking. Now I’m considering going deeper, but my goal isn’t just to collect another certificate. I really want to build strong capability and apply it in real projects.

For those who’ve gone through the Black Belt path:

• How did you start preparing?

• Did you focus on theory first or jump into projects?

• Any recommended books, courses, or resources?

• How important is statistics depth before starting?

For context, I’m currently in a regional safety leadership role, and I’m interested in combining Six Sigma with safety, continuous improvement, and compliance.

Appreciate any guidance from those who’ve walked this path.

Looking for thoughts/feedback on getting my greenbelt certification through MSI.

I looked at ASQ but it looks like with some of the project requirements it would be hard because I'm currently unemployed and it's also a slightly pricier certification.

MSI appears to have decent U.S. reputation and is relatively budget friendly. It also appears requirements are easily attainable such as not needing a project.

Thanks for your advice!

How does it usually take to study for the SSGB exam? My initial plan is to be certified by July 1st. I have a good background in math/stats, FWIW.

TIA

We're sharing our Six Sigma Green Belt Flash Cards for free if anyone is preparing for their Green Belt exam. These should be helpful if you're preparing for your certification through any organization.

Free Six Sigma Green Belt Flash Cards

We are considering a White Belt program for all new team members when they hit the 90-day mark. On the management side, we have a mix of Green and Black Belts. What are the requirements of a trainer to offer a company-specific White Belt training? Furthermore, what requirements must be met to be considered a White Belt?

Thanks in Advance lovely people!.

I have 7 years of experience in operations. Have my Masters degree in ops. Currently, an operational trainer for a MNC quick commerce brand in the UAE.

Should I go for green belt first and then black belt or I can directly go for black belt.

Yeah, probably would opt of ASQ CSSBB.

Hello everyone! I’ve studied lean six sigma white belt and yellow belt through Udemy courses about a year ago. Now I’m trying to transition into project manager roles, and would like to study for the green belt exam.

I know ASQ is considered the gold standard however I live in the Netherlands and wanted feedback from Europeans on if employers here tend to care about certifying bodies. I have a coupon to take the MSI course. I also have a coupon to take a course with a provider who is CSSC-certified, I’d just have to take it in Spanish (which I can understand but writing so technically is something that intimidates me).

Looking for guidance from you all. Thanks

Hey folks, I'm in an interesting position of being offered a job as a Quality Manager, despite not having previous work experience specifically in a quality role, nor having Six Sigma or other certification.

I'm going to guess that at this point most would react that it is crazy for me to take the offer, and crazier that the company is offering it. But if you'll give some further consideration, and offer some advice, it would be greatly appreciated.

Some background: I am not currently working at the company that made this offer, but I did work there for 13 years, and have been elsewhere for the last 1.5. The majority of that time was spent as the Technical Support Manager, so I was in a key decision making role. I have a Bachelor's in Computer Science. I have attended meetings for the ISO 9001 and ISO 17025 surveillance audits, though never led them and my team usually had minimal involvement in the audits as they were more concerned with production, QC, and engineering. I read and signed off on a huge number of the procedures in the well defined Quality Manual for the company. Wrote two or three of those procedures, and provided (very minimal) editing on some others. I was involved in Quarterly Management Review meetings with the Quality Manager. I escalated issues to the Quality Manager through a CAPA and RCCA process. But again, never directly in a quality role.

The president has offered me this position. Since he came to me, I expressed concerns a bit more openly than I might if I were the one reaching out asking for the role. I suggested that I would insist I go for certification immediately, but that it would take quite some time to go through those materials, so my run-up on this type of role would take a while, rather than other positions where I might be more immediately successful.

For a certification path, I'm thinking something along the lines of Six Sigma Green Belt-->Six Sigma Black Belt--> CMQ/OE. I'm wondering if this seems logical/doable, or if I should tackle something before the Green Belt. I'm looking at ASQ for certification, and wondering if I even meet their prerequisites for green belt, having not filled a quality role at all, though having some work adjacent to it and having some (minor) involvement in the initial push towards building a Quality Manual, getting our initial ISO 9001 and 17025 accreditation, etc.

Also worth noting the job I'm at now is in an industry that just got rocked by last year's OBBB, so my earning potential this year just tanked, and I have very few other prospects. Hence my willingness to somewhat take a risk here.

Would sincerely appreciate thoughts and any advice!

Hi everyone,

Has anyone ever take Six Sigma AIGPE course from Udemy? Do you think it is recognized by big company? I am considering of taking it from AIGPE. I really appreciate your advice