Confused about the concept of Process Sigma Level, Cpk and Ppk ? This is actually quite easy to explain. 1. Process Sigma Level and Cpk are 2 different index numbers that are used to indicate the Capability of a process to meet customer expectations with its output ( product or service being delivered by a process) 2. Both index numbers are calculated in a similar way and use a similar simple equations...that anyone passing maths at High School ( secondary school ) will be able to understand . 3. Both calculations use the Standard deviation AND the Mean Average of the distribution of values in the process output ( both of which are estimated by measuring samples). 4. Process Sigma Level turns out to simply 3 times the Cpk value where short term data is used. 5. the 1.5 standard deviation 'Fudge factor' should only be used for long term data calculations.
If you want more information on how to define and use Process Sigma Level, Cpk or Ppk then I would like to here from you and I will be happy to answer any follow-up questions that you may have.
Sunday 22 May 2016
Monday 16 May 2016
I am often asked questions about the 'official' body of knowledge for Lean Six Sigma and who is the official certification organisation for Lean Six Sigma ?
Yes there have been well documented Bodies of Knowledge for Six Sigma for many years. Both the IASSC ( IASSC.org) and ASQ (ASQ.org) have published Bodies of Knowledge documents which outline all topics which must be covered by training and are then tested in their exams. You can download copies for Black Belt, Green Belt and Yellow Belt from their websites. See for example http://www.iassc.org/six-sigma-certification/green-belt-certification/green-belt-body-of-knowledge/
The content of the ISO 13053 (2011) and the ISO 18404 ( 2015) matches very closely to both the IASSC and ASQ Bodies of Knowledge.
Yes, this is more than one certifying body for Six Sigma and Lean Six Sigma however this is not much different than Project Management certifications where we have PMI, Prince2 and also APM ( Association of Project Managment ).
Yes there have been well documented Bodies of Knowledge for Six Sigma for many years. Both the IASSC ( IASSC.org) and ASQ (ASQ.org) have published Bodies of Knowledge documents which outline all topics which must be covered by training and are then tested in their exams. You can download copies for Black Belt, Green Belt and Yellow Belt from their websites. See for example http://www.iassc.org/six-sigma-certification/green-belt-certification/green-belt-body-of-knowledge/
The content of the ISO 13053 (2011) and the ISO 18404 ( 2015) matches very closely to both the IASSC and ASQ Bodies of Knowledge.
Yes, this is more than one certifying body for Six Sigma and Lean Six Sigma however this is not much different than Project Management certifications where we have PMI, Prince2 and also APM ( Association of Project Managment ).
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