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Quality Glossary - G


Gage repeatability and reproducibility (GR&R): The evaluation of a gauging instrument’s accuracy by determining whether its measurements are repeatable (there is close agreement among a number of consecutive measurements of the output for the same value of the input under the same operating conditions) and reproducible (there is close agreement among repeated measurements of the output for the same value of input made under the same operating conditions over a period of time).

Gain sharing: A reward system that shares the monetary results of productivity gains among owners and employees.

Gantt chart: A type of bar chart used in process planning and control to display planned and finished work in relation to time.

Gap analysis: The comparison of a current condition to the desired state.

Gatekeeper: A timekeeper; in team meetings, a designated individual who helps monitor the team’s use of allocated time.

Geometric dimensioning and tolerancing (GD&T): A set of rules and standard symbols to define part features and relationships on an engineering drawing depicting the geometric relationship of part features and allowing the maximum tolerance that permits full function of the product.

George M. Low Trophy: The trophy presented by NASA to NASA aerospace industry contractors, subcontractors and suppliers that consistently maintain and improve the quality of their products and services. The award, which was formerly called the NASA Excellence Award for Quality and Productivity, is given in two categories: small business and large business. George M. Low was the NASA administrator for nearly three decades.

Goal: A broad statement describing a desired future condition or achievement without being specific about how much and when.

Go/no-go: State of a unit or product. Two parameters are possible: go (conforms to specifications) and no-go (does not conform to specifications).

Good laboratory practices (GLP) or 21 CFR, part 58: 144 requirements that control the procedures and operations of toxicology laboratories.

Good manufacturing practices (GMP) or 21 CFR, parts 808, 812 and 820: Requirements governing the quality procedures of medical device manufacturers.

Green Belt (GB): An employee who has been trained in the Six Sigma improvement method and will lead a process improvement or quality improvement team as part of his or her full-time job.

Group dynamic: The interaction (behavior) of individuals within a team meeting.

Groupthink: A situation in which critical information is withheld from the team because individual members censor or restrain themselves, either because they believe their concerns are not worth discussing or because they are afraid of confrontation.