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Six Sigma-Green Belt
[Course Book]
Introduction to
Six Sigma
Agenda
 Basics of Six Sigma
 What is Six Sigma?
 Six Sigma Approach
 Six Sigma As A Measure
 Why Six Sigma?
 History of Six Sigma
 Process for Six Sigma – DMAIC
 Structure of Six Sigma Teams
 DMAIC and DMADV
 Normal Distribution Curve or Bell Curve
 Summary
 Quick Quiz

3
Basics of Six Sigma
Highly disciplined continuous improvement process that focuses on developing and
delivering near-perfect products and services consistently
What is a Process?
Man
Material
Machine
Management
and so on

Feedback

Cause

Input (x)

Process f(x)

Output (y)

Effect

Products
Services

A process is a series of steps designed to produce a product and/or service as
required by the customer
Common feature of any such process as shown above is emphasis on inputs and
outputs
• Input is something put into a process or expended in its operation, to achieve an
output or a result
• Output is the final product or service delivered to an internal / external customer
• Output(s) of a process can be input(s) to another process

4
Definition of Sigma (σ)
Literally speaking, the 18th letter in the Greek alphabet, Sigma(σ) , is the symbol
for Standard Deviation
 6 SIGMA is a structured statistical methodology that can be used to measure the
quality of your service and performance
6 SIGMA measure of quality is 3.4 Defects Per Million Opportunities (DPMO). The
concept of DPMO will be discussed in the DEFINE phase in greater details.
What is Six Sigma
Six Sigma is a management methodology of which the GOAL is to improve
dramatically the performance and the quality of your processes, services &
products.
A customer focused business improvement process
Driven by teamwork, consensus & Logical reasoning
Structured, logical methodology - D M A I C
Y=F(Xs) i.e. Y is the function of single / multiple Xs
Focuses on making the process robust & reducing variability

Applies to Any Process

6
Six Sigma Approach

All processes have Inputs (X), and delivers Output (Y)
Controlling Inputs will control Output
This is y=f(x) thinking
Six Sigma As A Measure
99% Good (3.8 Sigma)

99.9997% Good (6 Sigma)

20,000 lost articles of mail per hour

Seven articles lost per hour

Unsafe drinking water for almost 15
minutes each day

One unsafe minute every seven
months

5,000 incorrect surgical operations per
week

1.7 incorrect operations per week

Two short or long landings at most
major airports each day

One short or long landing every five
years

200,000 wrong drug prescriptions each 68 wrong prescriptions per year
year
No electricity for almost seven hours
each month

One hour without electricity every 34
years
Why Six Sigma?
Decisions based on facts and data rather than opinion
Attacks the high-hanging fruit (The Hard Stuff)
Eliminates chronic problems (Common Cause Variation)
Improves customer satisfaction
Provides a disciplined approach to problem solving
Changes the company culture
Creates a competitive advantage

9
History of Six Sigma

 Motorola: In the 1980s, Motorola CEO Bob Galvin was struggling to compete with
foreign manufacturers, when Senior Sales Vice President Art Sundry admitted that
"our quality stinks,". Quality Engineer Bill Smith coined the improvement
measurements as "Six Sigma." Motorola increased the measurement scale of
defects to parts per million, which prompted the use of the 'six sigma'
terminology. Motorola branded Six Sigma.

Allied Signal
Motorola

1985

1987

General Electric

1992

1995

Johnson & Johnson,
Ford, Nissan,
Honeywell

2002

Dr Mikel J Harry wrote a
Paper relating early failures to
quality

10

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SSGB Training and Certification

  • 3. Agenda  Basics of Six Sigma  What is Six Sigma?  Six Sigma Approach  Six Sigma As A Measure  Why Six Sigma?  History of Six Sigma  Process for Six Sigma – DMAIC  Structure of Six Sigma Teams  DMAIC and DMADV  Normal Distribution Curve or Bell Curve  Summary  Quick Quiz 3
  • 4. Basics of Six Sigma Highly disciplined continuous improvement process that focuses on developing and delivering near-perfect products and services consistently What is a Process? Man Material Machine Management and so on Feedback Cause Input (x) Process f(x) Output (y) Effect Products Services A process is a series of steps designed to produce a product and/or service as required by the customer Common feature of any such process as shown above is emphasis on inputs and outputs • Input is something put into a process or expended in its operation, to achieve an output or a result • Output is the final product or service delivered to an internal / external customer • Output(s) of a process can be input(s) to another process 4
  • 5. Definition of Sigma (σ) Literally speaking, the 18th letter in the Greek alphabet, Sigma(σ) , is the symbol for Standard Deviation  6 SIGMA is a structured statistical methodology that can be used to measure the quality of your service and performance 6 SIGMA measure of quality is 3.4 Defects Per Million Opportunities (DPMO). The concept of DPMO will be discussed in the DEFINE phase in greater details.
  • 6. What is Six Sigma Six Sigma is a management methodology of which the GOAL is to improve dramatically the performance and the quality of your processes, services & products. A customer focused business improvement process Driven by teamwork, consensus & Logical reasoning Structured, logical methodology - D M A I C Y=F(Xs) i.e. Y is the function of single / multiple Xs Focuses on making the process robust & reducing variability Applies to Any Process 6
  • 7. Six Sigma Approach All processes have Inputs (X), and delivers Output (Y) Controlling Inputs will control Output This is y=f(x) thinking
  • 8. Six Sigma As A Measure 99% Good (3.8 Sigma) 99.9997% Good (6 Sigma) 20,000 lost articles of mail per hour Seven articles lost per hour Unsafe drinking water for almost 15 minutes each day One unsafe minute every seven months 5,000 incorrect surgical operations per week 1.7 incorrect operations per week Two short or long landings at most major airports each day One short or long landing every five years 200,000 wrong drug prescriptions each 68 wrong prescriptions per year year No electricity for almost seven hours each month One hour without electricity every 34 years
  • 9. Why Six Sigma? Decisions based on facts and data rather than opinion Attacks the high-hanging fruit (The Hard Stuff) Eliminates chronic problems (Common Cause Variation) Improves customer satisfaction Provides a disciplined approach to problem solving Changes the company culture Creates a competitive advantage 9
  • 10. History of Six Sigma  Motorola: In the 1980s, Motorola CEO Bob Galvin was struggling to compete with foreign manufacturers, when Senior Sales Vice President Art Sundry admitted that "our quality stinks,". Quality Engineer Bill Smith coined the improvement measurements as "Six Sigma." Motorola increased the measurement scale of defects to parts per million, which prompted the use of the 'six sigma' terminology. Motorola branded Six Sigma. Allied Signal Motorola 1985 1987 General Electric 1992 1995 Johnson & Johnson, Ford, Nissan, Honeywell 2002 Dr Mikel J Harry wrote a Paper relating early failures to quality 10

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