what is six sigma quality standards? How it is implemented practically?

Answer 1

Six Sigma at many organizations simply means a measure of quality that strives for near perfection. Six Sigma is a disciplined, data-driven approach and methodology for eliminating defects (driving towards six standard deviations between the mean and the nearest specification limit) in any process -- from manufacturing to transactional and from product to service.

The statistical representation of Six Sigma describes quantitatively how a process is performing. To achieve Six Sigma, a process must not produce more than 3.4 defects per million opportunities. A Six Sigma defect is defined as anything outside of customer specifications. A Six Sigma opportunity is then the total quantity of chances for a defect. Process sigma can easily be calculated using a Six Sigma calculator.

The fundamental objective of the Six Sigma methodology is the implementation of a measurement-based strategy that focuses on process improvement and variation reduction through the application of Six Sigma improvement projects.

This is accomplished through the use of two Six Sigma sub-methodologies: DMAIC and DMADV. The Six Sigma DMAIC process (define, measure, analyze, improve, control) is an improvement system for existing processes falling below specification and looking for incremental improvement. The Six Sigma DMADV process (define, measure, analyze, 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. Both Six Sigma processes are executed by Six Sigma Green Belts and Six Sigma Black Belts, and are overseen by Six Sigma Master Black Belts.

According to the Six Sigma Academy, Black Belts save companies approximately $230,000 per project and can complete four to 6 projects per year. General Electric, one of the most successful companies implementing Six Sigma, has estimated benefits on the order of $10 billion during the first five years of implementation. GE first began Six Sigma in 1995 after Motorola and Allied Signal blazed the Six Sigma trail. Since then, thousands of companies around the world have discovered the far reaching benefits of Six Sigma.

Answer 2

A method or set of techniques, Six Sigma has also become a movement focused on business process improvement. It is a quality measurement and improvement program originally developed by Motorola that focuses on the control of a process to the point of ± six sigma (standard deviations) from a centerline, or put another way, 3.4 defects per million items. A Six Sigma systematic quality program provides businesses with the tools to improve the capability of their business processes. It includes identifying factors critical to quality as determined by the customer, reducing process variation and improving capabilities, increasing stability and designing systems to support the six sigma goal.

Answer 3

Hello Kiran,

People often view Six Sigma as a rigorous statistical quality control mechanism that reduces defects to 3.4 in a million opportunities. Rather, it can more broadly be thought of as a way of using statistics to understand customer needs better and to manage business processes to meet those needs.

Translating customer expectations and experiences into a language of numbers is the first step in measuring and improving our processes. In statistical terms, customers expect the mean, or our target for performance. Mean is also referred to as the arithmetic “average” in common language. What customers actually experience, however, is known as variation from the mean. For example, how often do we notice timely delivery from a thirty-minute pizza delivery shop? In contrast, we always take note of delayed deliveries, or that shop’s variation.

If we can measure process variations that cause defects, defined as unacceptable deviation from the mean or target, we can work towards systematically managing variation to eliminate those defects. Six Sigma provides a methodology to achieve this.

Its implementation requires top management focus and support. Usually a subset of senior management team is dedicated for this purpose. This team is trained on Six Sigma Methodology who eventually spearheads the six sigma projects. Practitioners are graded on the basis of their knowledge & experience – these grades are known as green, black and master black belts.

Hope it helps you understand...

With warm regards,

SKS

Answer 4

Six Sigma was started at Motorola. Read everything here: http://www.isixsigma.com/sixsigma/six_sigma.asp

Answer 5

six sigma is the quality standrad which means one millionth product or corporate dealings overcame.wipro is the first company in india to implement it.

Answer 6

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