Six Sigma Terminology - G to J

Gantt Chart

A Gantt chart is a type of bar chart, devised by Henry Gantt in the 1910s, that explains a project schedule. Gantt charts illustrate the start and finish dates of the terminal elements and summary elements of a project


Social, economical, environmental and technological perspectives to the many cultures that exist in the world.

Green Belt

An employee of an organization who has been trained on the improvement methodology of Six Sigma and will lead a process improvement or quality improvement team as *part* of their full-time job. Their degree of knowledge and skills associated with Six Sigma is less than that of a Black Belt or Master Black Belt. Extensive product knowledge in their company is a must in their task of process improvement.

Hawthorn Effect

Improved process data that results from process operators who know their process performance is being measured and exercise more care in the execution of the process than would normally be done.

Hypothesis Testing

Hypothesis testing in statistics is a way for you to test the results of a survey or experiment to see if you have meaningful results. You’re testing whether your results are valid by figuring out the odds that your results have happened by chance. If your results may have happened by chance, the experiment won’t be repeatable and so has little use.

Ideation Brainstorming

New tools for brainstorming combine advantages of traditional brainstorming techniques of Osborn and the I-TRIZ techniques. TRIZ is an acronym of Russian Theory of Inventive Problem Solving, which has been developed by Henrich Altschuler in 1940s-80s in Russia.

New tools are called Ideation Brainstorming, as they are based on the follow-up research of TRIZ specialists in Ideation, Inc. led by Boris Zlotin. Inventor and analyst B.Zlotin has been a student of H. Altschuler and has published several books together with him. The follow-up research studies are known as I-TRIZ — an expanded, enhanced, and restructured version of the Theory of Inventive Problem Solving (TRIZ)

Ishikawa, Ichiro

Japanese Quality professional is widely known for the Ishikawa diagram also known as the fishbone or cause and effect diagram. He is also known as Ishikawa, Kaoru.


Stands for IT (Information Technology) Infrastructure Library.

It is a British government service management standard/model that documents best practices for support and delivery of IT Services. It is used to demonstrate compliance and to measure improvement.

ISO 9000 Series of Standards

Series of standards established in the 1980s by countries of Western Europe as a basis for judging the adequacy of the quality control systems of companies.

Just In Time (JIT) Manufacturing

A planning system for manufacturing processes that optimizes availability of material inventories at the manufacturing site to only what, when & how much is necessary.

Typically a JIT Mfg. Avoids the conventional Conveyor Systems. JIT is a pull system where the product is removed along to its finish, rather than the conventional mass production which is a push system. It is possible using various tools like KANBAN, ANDON & CELL LAYOUT.