Six Sigma is a set of tools and techniques developed by Motorola in 1986 to improve processes and reduce defects. It identifies and removes causes of defects to improve quality outputs. Each Six Sigma project follows defined steps to achieve targets like reducing costs and increasing customer satisfaction. Six Sigma aims for only 3.4 defects per million by reducing process variability through statistical analysis and continuous improvement. Projects use DMAIC or DMADV methodologies following the Plan-Do-Check-Act cycle. Six Sigma has helped companies like Motorola save billions and achieve very high quality standards with minimal defects.

1. Six Sigma method of quality control

2.  The concept of Six Sigma was developed in 1986 by Motorola as a set of
tools and techniques to improve the processes
 Six Sigma identifies and removes the defect causing elements along with
reducing the changeability of the business and manufacturing processes to
improve the quality of outputs of a manufacturing process.
 Each Six Sigma project carried out within an organization follows a defined
sequence of steps and has specific value targets, for example: reduce
process cycle time, reduce pollution, reduce costs, increase customer
satisfaction, and increase profits.
Introduction

3.  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 (3.4 defective features per million
opportunities)
 According to the basics of the doctrine of Six Sigma the success
of a company vitally depends upon continuous efforts for
achieving stable manufacturing processes. The factors of these
processes are also important to be measured statistically so that
they can be improved by analyzing them.

4. Six Sigma projects follow two project methodologies inspired by Deming's
Plan-Do-Check-Act Cycle-
1. DMAIC- is used for projects aimed at improving an existing business
process.
2. DMADV- is used for projects aimed at creating new product or process
designs.
Methodologies

5. The DMAIC project methodology has five phases:
1.Define
2. Measure
3. Analyze
4. Improve
5. Control

6. he DMADV project methodology, known as DFSS ("Design For Six
Sigma"), features five phases:
1. Define
2. Measure
3. Analyze
4. Design
5. Verify

7.  Executive Leadership includes the CEO and other members of
top management
 Champions
 Master Black Belts
 Black Belts
 Green Belts
Implementation roles

8.  Six Sigma mostly finds application in large organizations.An
important factor in the spread of Six Sigma was GE's 1998
announcement of $350 million in savings thanks to Six Sigma, a
figure that later grew to more than $1 billion.
 Six Sigma however contains a large number of tools and
techniques that work well in small to mid-size organizations.
Application

9.  Motorola had reported some astonishing facts about the benefits Six Sigma
has offered to its organization after registering it as the mark of their service.
Company has disclosed to have saved over $17 billion by the end of 2006
with the help of quality improvement processes offered by this unique
system.
 While practicing the goals of Six Sigma in an organization then it is almost
impossible to find any defect in the production of their products and services.
In fact it is designed for the improvement in the quality of production of the
organizations by improving their manufacturing processes.
Consequential results of Six Sigma

10.  In large organizations where clear communication channels and extensive
management infrastructure is available most effective results are shown by
this type of programs. Most of the companies which have adopted this quality
control system for improving their products and services are among the most
successful ventures of the world.
 The comments of these companies reveal the fact that by embracing Six
Sigma they have saved lots of money than earlier.