Six Sigma Methodology
Six Sigma Methodology was developed on Shewart’s statistical control philosophy and
based off of process capability studies. The Greek symbol sigma (σ) stands for variability. The
purpose for the Six Sigma Methodology is to reduce the amount of variation in process or
performance. There are two main types of Six Sigma methodologies, DMAIC and DMADV
Motorola was the first company to utilize the Six Sigma. This started in the mid1980s.
Motorola wanted to use this to improve the quality of their production by reducing the number of
defects. For the company to implement Six Sigma, the number of defected parts had to fall
within the range of 3.4 defects per 1 million opportunities (Spath, 2013). Once Motorola
implemented this methodology, it is said that they saved millions of dollars. Another company
that successfully implemented Six Sigma is General Electric (GE) which they then refined the
The most commonly followed method used in facilities is DMAIC. This stands for
define, measure, analyze, improve, and control. This process is used to improve a process or
product that is already existing. The goal of utilizing Six Sigma is to create process that will run
within the parameters of Six Sigma. First, they must define the problem. This will help determine
what process you need to focus on and improve. Second is measure; this phase is where you
would start collecting data on the process. Analyzing the data is the next step you would follow.
This will determine the current variation percentage and what aspect of the process need to be
improved. Lastly, after all your data collection, analyzing, and determination of the problem you
would implement a variation control and find a way to manage ...
... middle of paper ...
...istics and data to steer your business decisions in the right
direction. By following these guidelines, it will give a business measurable goals that can be
supported by statistics gathered from every aspect of the company, from the customer all the way
up to the very top.
Saxena, S. (n.d.). Introduction to 6 Sigma. Retrieved February 27, 2015, from
Spath, P. (2013). Introduction to healthcare quality management (Second Ed.). Chicago,
Illinois: Health Administration Press.
What is Six Sigma | Villanova University. (n.d.). Retrieved February 28, 2015, from
Is Six Sigma kIlling Your Company 's Future? (2014, January 1). Retrieved from
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