Six Sigma


DEFINITION of 'Six Sigma'

A quality-control program developed in 1986 by Motorola. Initially, it emphasized cycle-time improvement and reducing manufacturing defects to a level of no more than 3.4 per million. Since then, Six Sigma has evolved into a more general business-management philosophy focused on meeting customer requirements, improving customer retention, and improving and sustaining business products and services. Six Sigma is applicable to all industries.


A number of vendors, including Motorola itself, offer Six Sigma training. Special certifications include yellow belt, green belt and black belt. According to Motorola, companies that have used Six Sigma include Bank of America, Texas Instruments, Toshiba, American Express and Fidelity, among hundreds of others.

  1. Total Quality Management - TQM

    The continuous process of reducing or eliminating errors in manufacturing, ...
  2. Quality Control

    A process through which a business seeks to ensure that product ...
  3. Acceptable Quality Level - AQL

    A statistical measurement of the maximum number of defective ...
  4. Supply Management

    A broad term describing the various acts of identifying, acquiring ...
  5. Flight To Quality

    The action of investors moving their capital away from riskier ...
  6. Master Of Business Administration ...

    A graduate degree achieved at a university or college that provides ...
Related Articles
  1. Active Trading Fundamentals

    Evaluating A Company's Management

    Financial statements don't tell you everything about a company's health. Investigate the management behind the numbers!
  2. Options & Futures

    Putting Management Under The Microscope

    We tell you where to find the telltale signs of corporate misdeeds.
  3. Bonds & Fixed Income

    Trademarks Of A Takeover Target

    These tips can lead you to little companies with big prospects.
  4. Investing

    What a Family Tradition Taught Me About Investing

    We share some lessons from friends and family on saving money and planning for retirement.
  5. Investing

    Where the Price is Right for Dividends

    There are two broad schools of thought for equity income investing: The first pays the highest dividend yields and the second focuses on healthy yields.
  6. Personal Finance

    How Tech Can Help with 3 Behavioral Finance Biases

    Even if you’re a finance or statistics expert, you’re not immune to common decision-making mistakes that can negatively impact your finances.
  7. Investing Basics

    5 Tips For Diversifying Your Portfolio

    A diversified portfolio will protect you in a tough market. Get some solid tips here!
  8. Entrepreneurship

    Identifying And Managing Business Risks

    There are a lot of risks associated with running a business, but there are an equal number of ways to prepare for and manage them.
  9. Forex Education

    Explaining Uncovered Interest Rate Parity

    Uncovered interest rate parity is when the difference in interest rates between two nations is equal to the expected change in exchange rates.
  10. Fundamental Analysis

    Using Decision Trees In Finance

    A decision tree provides a comprehensive framework to review the alternative scenarios and consequences a decision may lead to.
  1. How historically valid is the 80-20 rule?

    While there is a lack of scientifically stringent statistical analysis either proving or disproving the validity of the 8 ... Read Full Answer >>
  2. What is operations management theory and how can it help a business?

    Operations management is concerned with controlling the production process and business operations in the most efficient ... Read Full Answer >>
  3. What is the difference between Lean Six Sigma and Six Sigma?

    Six Sigma and Lean Six Sigma are two forms of business process and production inspired by Kaizen philosophies to improve ... Read Full Answer >>
  4. Do working capital funds expire?

    While working capital funds do not expire, the working capital figure does change over time. This is because it is calculated ... Read Full Answer >>
  5. Does working capital include inventory?

    A company's working capital includes inventory, and increases in inventory make working capital increase. Working capital ... Read Full Answer >>
  6. What is the utility function and how is it calculated?

    In economics, utility function is an important concept that measures preferences over a set of goods and services. Utility ... Read Full Answer >>

You May Also Like

Hot Definitions
  1. Cyber Monday

    An expression used in online retailing to describe the Monday following U.S. Thanksgiving weekend. Cyber Monday is generally ...
  2. Bar Chart

    A style of chart used by some technical analysts, on which, as illustrated below, the top of the vertical line indicates ...
  3. Take A Bath

    A slang term referring to the situation of an investor who has experienced a large loss from an investment or speculative ...
  4. Black Friday

    1. A day of stock market catastrophe. Originally, September 24, 1869, was deemed Black Friday. The crash was sparked by gold ...
  5. Turkey

    Slang for an investment that yields disappointing results or turns out worse than expected. Failed business deals, securities ...
  6. Barefoot Pilgrim

    A slang term for an unsophisticated investor who loses all of his or her wealth by trading equities in the stock market. ...
Trading Center