Six Sigma Opportunity Counting

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Posted by: Anonymous
Posted on: Monday, 16th April 2001, 12:00 AM.

We use PPM to monitor the number of "Defective Parts Per Million" units produced or shipped. In contrast, we could use DPMO as the unit of measure for tracking "Defects Per Million Opportunities". Typically, most products (and services) have more than one opportunity of going wrong. For example, it is estimated than in electronics assembly a diode could have the following opportunities for error: Wrong DIode and Wrong Polarity (inserted backwards), so for each assembly shipped, at least 2 defect opportunities could be assigned for each diode.
Apparently, some manufacturers of large complex equipment with many components prefer to use DPMO because it "compensates" for the number of components (My point is that this approach dilutes Six Sigma metrics).
In our product lines, we average about 50 possible opportunities for error, therefore, the difference in our quality levels (if we use PPM or DPMO) amounts to approximately one sigma depending exclusively on what variable we're tracking.

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 Message Thread:

Six Sigma Opportunity Counting by iSixSigma Community on Sunday, 15th April 2001

Re: Six Sigma Opportunity Counting by Ajit Appari on Monday, 16th April 2001

Re: Six Sigma Opportunity Counting by Ahamed Shareef on Wednesday, 14th November 2007

Re: Six Sigma Opportunity Counting by inamdar on Tuesday, 28th August 2001

Re: Six Sigma Opportunity Counting by James D on Thursday, 16th December 2004

Re: Six Sigma Opportunity Counting by Tronan on Thursday, 16th December 2004

Re: Six Sigma Opportunity Counting by Stan on Thursday, 16th December 2004

Re: Six Sigma Opportunity Counting by Mike Carnell on Thursday, 16th December 2004

Re: Six Sigma Opportunity Counting by Stan on Thursday, 16th December 2004

Re: Six Sigma Opportunity Counting by Ron on Thursday, 16th December 2004

Re: Six Sigma Opportunity Counting by Mike Carnell on Thursday, 16th December 2004

Re: Six Sigma Opportunity Counting by Greg Loebbaka on Monday, 14th February 2005

Re: Six Sigma Opportunity Counting by Mike Carnell on Monday, 14th February 2005

Re: Six Sigma Opportunity Counting by Bernard McGarvey on Monday, 16th April 2001

Re: Six Sigma Opportunity Counting by Kim Niles on Monday, 16th April 2001

Re: Six Sigma Opportunity Counting by Anonymous on Monday, 16th April 2001

Re: Six Sigma Opportunity Counting by Kim on Monday, 16th April 2001

Re: Six Sigma Opportunity Counting by Anonymous on Monday, 16th April 2001

Re: Six Sigma Opportunity Counting by Gary on Tuesday, 17th April 2001

Re: Six Sigma Opportunity Counting by Anonymous on Monday, 23rd April 2001

Re: Six Sigma Opportunity Counting by Anonymous on Monday, 23rd April 2001

Re: Six Sigma Opportunity Counting by a customer on Monday, 16th April 2001

Re: Six Sigma Opportunity Counting by Ken Myer on Monday, 16th April 2001

Re: Six Sigma Opportunity Counting by Bob on Tuesday, 28th August 2001

Re: Six Sigma Opportunity Counting by Grant Blair on Monday, 16th April 2001

Re: Six Sigma Opportunity Counting by M.Young on Tuesday, 17th April 2001

Re: Six Sigma Opportunity Counting by A Customer on Tuesday, 17th April 2001

Re: Six Sigma Opportunity Counting by Ken Myers on Wednesday, 18th April 2001

Re: Six Sigma Opportunity Counting by Jonas Williamsson on Tuesday, 17th April 2001

Re: Six Sigma Opportunity Counting by DRAGOS BANDUR on Tuesday, 17th April 2001

Re: Six Sigma Opportunity Counting by Ken Myers on Wednesday, 18th April 2001

Re: Six Sigma Opportunity Counting by DRAGOS BANDUR on Tuesday, 24th April 2001

Re: Six Sigma Opportunity Counting by Marc Richardson on Tuesday, 28th August 2001

Re: Six Sigma Opportunity Counting by DRAGOS BANDUR on Monday, 17th May 2004

Re: Six Sigma Opportunity Counting by Deer on Monday, 30th December 2002

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