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Importance Of Six Sigma

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The goal of Six Sigma is to increase profits by eliminating variability, defects and waste that undermine customer loyalty. (iSixSigma, 2016)

Six Sigma can be understood/perceived at three levels:

Metric: 3.4 Defects Per Million Opportunities. DPMO allows you to take complexity of product/process into account. Rule of thumb is to consider at least three opportunities for a physical part/component – one for form, one for fit and one for function, in absence of better considerations. Also, you want to be Six Sigma in the Critical to Quality characteristics and not the whole unit/characteristics.

Methodology: DMAIC/DFSS structured problem-solving roadmap and tools.
Philosophy: Reduce variation in your business and take customer-focused, data-driven …show more content…

This increase in performance and decrease in process variation leads to defect reduction and vast improvement in profits, employee morale and quality of the product.

Six Sigma is a disciplined, data-driven approach and methodology for eliminating defects (driving toward six standard deviations between the mean and the nearest specification limit) in any process – from manufacturing to transactional and from product to service(iSixSigma:2014)

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The Six Sigma DMAIC process (define, measure, analyse, improve, control) is an improvement system for existing processes falling below specification and looking for incremental improvement. The Six Sigma DMADV process (define, measure, analyse, design, verify) is an improvement system used to develop new processes or products at Six Sigma quality levels. It can also be employed if a current process requires more than just incremental improvement. (iSixSigma, 2016)

The DMAIC tools as cited by (Rose, 2005:33) are:
• Define customers and requirements
• Measure things critical to quality
• Analyse baseline, opportunities, objectives and root causes
• Improve the process
• Control the

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