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Message Icon Topic: Six Sigma Process Improvement -- (D)MAIC

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tanushree
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Quote tanushree Replybullet Topic: Six Sigma Process Improvement -- (D)MAIC
    Posted: 23Oct2007 at 7:03am

Six Sigma Process Improvement -- (D)MAIC


A more quantitative version of Deming's PDCA (Plan-Do-Check-Act) Process Improvement methodology was developed to implement this statistical approach -- it is commonly referred to as MAIC.

    MAIC
  • Measure
  • Analyze
  • Improve
  • Control
Key product-process performance variables are measured, analyzed, improved, and controlled using statistical methods. The simple "statistical" quality tools that were popularized in the Total Quality era are reinforced with Design of Experiments (DOE) and more sophisticated Statistical Process Control techniques.

Process sigma is the primary unit of measure. It is determined from an analysis of the number of defects observed in a process. Performance is compared to the Best-In-Class sigma for that process to determine whether the process needs to be improved or the product / service needs to be re-designed. When improvement is necessary, Design of Experiments (DOE) are used to determine which product or process parameters are most important and specific parameter values that will give the best performance. SPC is used to continually monitor product and process performance.

DMAIC Similar to the problem-solving models where an initial step to define the problem was frequently added, some practitioners prefer to precede MAIC with a Define step. They feel that selecting and defining the right process is critical. Effort can easily be wasted working on poorly selected, ill-defined processes -- as illustrated by many TQM failures.



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