Share on Twitter Share on Google+ Share on Facebook Share on LinkedIn As key tool in the Six Sigma DMAIC Methodology is the use of the Solution Selection Matrix. By contrast, this same approach in Lean Manufacturing is typically called a Countermeasures Matrix, which shows all the potential countermeasures for each root cause. A solution [...]
Six Sigma Case Studies, Examples, and Training Material
Following the definition of Six Sigma below are articles on Six Sigma below show examples, applications, and a comprehensive definitions and application of its tools.
What is Six Sigma?
Six Sigma originated as a set of practices designed to improve manufacturing processes and eliminate defects, but its application was subsequently extended to other types of business processes as well. In Six Sigma, a defect is defined as any process output that does not meet customer specifications, or that could lead to creating an output that does not meet customer specifications.
Bill Smith first formulated the particulars of the methodology at Motorola in 1986. Six Sigma was heavily inspired by six preceding decades of quality improvement methodologies such as quality control, TQM, and Zero Defects, based on the work of pioneers such as Shewhart, Deming, Juran, Ishikawa, Taguchi and others.
The term “Six Sigma” comes from a field of statistics known as process capability studies. Originally, it referred to the ability of manufacturing processes to produce a very high proportion of output within specification. Processes that operate with “six sigma quality” over the short term are assumed to produce long-term defect levels below 3.4 defects per million opportunities (DPMO). Six Sigma’s implicit goal is to improve all processes to that level of quality or better.
In recent years, some practitioners have combined Six Sigma ideas with lean manufacturing to yield a methodology named Lean Six Sigma.
Share on Twitter Share on Google+ Share on Facebook Share on LinkedIn The third Phase in the 6 Sigma DMAIC methodology is Analyze. Previously, we discussed the steps in the DMAIC Define Phase and Measure Phase. In the Define Phase, the focus is on agreement of what the problem is, it’s impact on customers, the firm, [...]
Share on Twitter Share on Google+ Share on Facebook Share on LinkedIn Part of the Analyze Phase in the DMAIC Six Sigmas Methodology is to verify the potential root causes with hypothesis testing. One common hypothesis test is an application of the Chi Square Test called a Contingency Table, also called a Present / Not [...]
Share on Twitter Share on Google+ Share on Facebook Share on LinkedIn This article is a follow-up to my article on Justin Bieber and Six Sigma. To the extent that search terms is a measure of intention and interest, Google Trends is helpful in identifying, by geography, the general interest of that population given the [...]
Share on Twitter Share on Google+ Share on Facebook Share on LinkedIn Note: If you arrived here searching for Justin Bieber, I’m sorry but you’ll see geeky stuff about Lean Manufacturing and Six Sigma instead. But, in the hope that I don’t dissappoint you, skip to the bottom of this article and you can get [...]
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