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Welcome to TreQna !!

TreQna was established early 2005 and started life as an open source venue for Six Sigma. The policy was, and still is, that everything on TreQna is free. Over time, TreQna has expanded to encompass other business/process improvement methodologies such as Lean, TPM, PDCA.

We have an alliance with TreQna University where you can find several business/process improvement training courses. (Some are free, certificated and highly acclaimed.)

Please feel free to browse and become involved with our forum. We have a lot of members who are knowledgeable, willing to answer your questions and interact with you. Besides that, we offer newsletters, articles and other downloads. If you would like to contribute, please let us know.

We're a friendly community and more than willing to help out, no matter what the problem or issue.

Remember: "sharing knowledge = gaining knowledge = interraction!"

If you have a question which you don't want to post in public (for any reason) please feel free to contact any of our volunteers:

We look forward to your active posting and involvement.

Signed: TreQna Board of Directors

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Important Announcements put up by Site Admin and Moderators are located here. Please read this first. Its our channel to ensure you are updated of new developments.

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Happy Easter - last post by Lakota

Articles Section

  1. 00 - General Topics,
  2. 01 - General tools (Introductions),
  3. 02 - Problem solving methodologies (Overviews),
  4. 03 - Tools (Detail),
  5. 04 - 7 Classic Tools Overview,
  6. 05 - 7 New Tools Overview,
  7. 06 - Problem Defining Tools Overview,
  8. 07 - Data Collection Tools Overview,
  9. 08 - Analysis Tools Overview,
  10. 09 - Statistical Analysis Tools Overview,
  11. 10 - Ideas and Options Tools Overview,
  12. 11 - Decision Making Overview,
  13. 12 - Teams Overview,
  14. 13 - Change Management Overview,
  15. 99 - Miscellaneous

All Articles are Stored Here

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Box Whiskers Plot - last post by sparky

Quality News

RSS syndicated News Links on Six Sigma

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Value Stream Mapping - last post by sparky

Suggestions, Questions and Everything else

Any Suggestions, Questions or everything else in general and/or relating to the website/community/copyright/.... you can post them here.

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The winning of Hearts and M... - last post by Lakota

The Newbie

This forum is for all you new folks. If you're new to TreQna, new to Six Sigma, new to Lean, new to business improvement, Say Hi! to other folks and get advice on how to get involved with TreQna. Welcome aboard!

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Welcome To TreQna - Open So... - last post by prabh

Soap Box

Want to speak your mind on any subject under the sun ? Want to vent some steam, voice thoughts which you think are radical, controversial etc etc, without fear of being shouted down ? Do it here, this is the place.

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Why won't people take r... - last post by Lakota

The Link-Farm

All the best links to all the best resources. Contributed by the community and accumulated by the TreQna team. Note: If you add a link, it will only show up after it has been approved by a moderator. The moderator may classify the link to an appropriate section if needed.

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Toyota Production System - last post by Lakota

Jobs, Contracts & Resumes

For those who are on the hunt for a new job or companies who do offer a busines process improvement job for one of our fellow members, do post here your queries

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Your CV - last post by sparky

Toggle Quality Methodologies Quality Methodologies

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Six Sigma

  1. Minitab Assistance

Appropriate for discussions around Six Sigma. Covers everything from Define to Control, Methodology, Statistical Tests and tools.

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Focus on Value Creation - last post by Lakota

Lean & Toyota Production System (TPS)

Appropriate for all Discussions around the Lean toolkit derived from the Toyota Production System (TPS) and its applications. To discuss its absorption in Six Sigma - please post in the Six Sigma board instead.

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How to Draw a Value Stream Map - last post by Lakota


This forum covers alle the discussions about Total Productive Maintenance (TPM)

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How do you Deal with Failure - last post by Lakota

Other Methodologies not covered by above

Appropriate to discuss all other methodologies which are not stated above.

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Kepner Tregoe methodology - last post by MikeC

Toggle Quality Management Systems Quality Management Systems

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Total Quality Management (TQM) & World Class Manufacturing (WCM)

Any thoughts, questions about TQM and WCM, post and share them here.

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Lack of Confidence in Leade... - last post by Haz


  1. ISO9001:2008

Everything that covers ISO is discussed here

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Audit Programme - last post by Haz

Project and Change Management

Project and Change Management discussions.

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Continuous Improvement In N... - last post by sparky


Any questions about Plan Do Check Act, this is the right forum to post!

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Software Quality Systems

Post here your experience, questions about software quality systems like Capability Maturity Model Integration (CMMI) and Prince2

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Toggle Enabling Skills Enabling Skills

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Talk about training, techniques, tips et al. You could post exercises, games, videos, techniques, strategy and anything else to do with training.

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On - Gaining Competitive Ad... - last post by Lakota

Lean Six Sigma Question Bank

  1. Real Life Cases,
  2. Statistical Questions,
  3. GB-exam

A collection of question to help you prepare or brush up for Six Sigma/Lean exams. A New Question is put up every day or so. Answers will be discussed every two days or so.
If you have a new question please feel free to add.

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Cycle Time Reduction - last post by Lakota

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