What is Six Sigma ( 6σ )

What is Six Sigma ( 6σ )

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. Jack Welch made it central to his business strategy at General Electric in 1995. 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.

Six Sigma ( 6σ ) is the statical measure used to ensure quality of products and services. The Six Sigma academy has developed a break through strategy consisting of measure, analyse, improve and control, that allows companies to make exceptional bottom line improvements.

Six Sigma ( 6σ ) capability

(I) Six Sigma ( 6σ ) :- 3.4 defects per million.

(ii) Five Sigma ( 5σ ) :- 233 defects per million.

(iii) Four Sigma ( 64σ ) :- 6,120 defects per million.

(iv) Three Sigma ( 3σ ) :- 66,807 defects per million.

(v) Two Sigma ( 2σ ) :- 3,08,537 defects per million.

(vi) One Sigma ( 1σ ) :- 6,90,000 defects per million.

List of Six Sigma companies ( Source :- Wikipedia )

The following companies claim to have successfully implemented Six Sigma in some form or another:

(1) 3M

(2) Amazon

(3) Atos

(4) Autoliv

(5) BAE Systems

(6) Bank of America

(7) Becton Dickinson

(8) Bechtel

(9) Boeing

(10) Caterpillar Inc.

(11) Computer Sciences Corporation

(12) Convergys

(13) Cooper Tire & Rubber Company.

(14) Credit Suisse

(15) Damco

(16) Deere & Company

(17) Dell

(18) Denso

(19) Eastman Kodak Company

(20) Evonik Industries

(21) Ford Motor Company

(22) General Electric

(23) Inventec

(24) Lionbridge

(25) Maersk

(26) McKesson Corporation

(27) Motorola

(28) Mumbai's dabbawalas

(29) Northrop Grumman

(30) PolyOne Corporation

(31) Raytheon

(32) Sears

(33) Shop Direct

(34) Starwood Hotels & Resorts Worldwide

(35) Unipart

(36) United States Army

(37) United States Marine Corps

(38) The Vanguard Group

(39) Wipro

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