Basics of Six Sigma - Part 1

 

What is mean by Six sigma?

Six Sigma (6σ) is a set of techniques and tools for process improvement. It was introduced by American engineer Bill Smith while working at Motorola in 1986. A six sigma process is one in which 99.99966% of all opportunities to produce some feature of a part are statistically expected to be free of defects.

What is mean by Six sigma process?

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.

What does six sigma stands for?

6 standard deviations

Six Sigma stands for 6 standard deviations (6σ) between avarage and acceptable limits. LSL and USL stand for “Lower Specification Limit” and “Upper Specification Limit” respectively. Specification Limits are derived from the customer requirements, and they specify the minimum and maximum acceptable limits of a process.

 

Who invented the Six Sigma?

At Motorola in the 1980s, Mikel Harry and Bill Smith developed Six Sigma to make improvements on the manufacturing floor.

What are the 5 Steps of the Six Sigma improvement model?

The Six Sigma Methodology comprises five data-driven stages — Define, Measure, Analyze, Improve and Control (DMAIC). When fully implemented, DMAIC standardizes an organization's problem-solving approach and shapes how it ideates new process solutions.

 

 

Why it is called six sigma?

The name Six Sigma is derived from the bell curve used in statistics where one Sigma represents one standard deviation away from the mean. ... Like all processes, Six Sigma is also made up of two methodologies, which are DMAIC and DMADV or DFSS

What are the Six Steps of Six Sigma?

The Six Sigma steps for process improvement, also referred to as DMAIC, are fairly direct and straightforward.

1.     Define the problem. Craft a problem statement, goal statement, project charter, customer requirement, and process map.

2.     Measure the current process. ...

3.     Analyze the cause of issues. ...

4.     Improve the process. ...

5.     Control.

 

How many belts are there in six sigma?

The Six Sigma certification comes in various skill levels: White Belt, Yellow Belt, Green Belt, Black Belt, and Master Black Belt. These certifications can be obtained through an accreditation body like the American Society for Quality (ASQ).