V&V. verification and validation.
VA/VE Value Analysis/Value Engineering.
Valid input. (NBS) Test data that lie within the domain of the function represented by the program.
Valid.(1) Sound. (2) Well grounded on principles of evidence (3) Able to withstand criticism or objection.
Validate. To prove to be valid.
Validation Establishing proof that a design, product, or process will perform to specifications.
Validation protocol. (FDA) A written plan stating how validation will be conducted, including test parameters, product characteristics. production equipment, and decision points on what constitutes acceptable test results. See: test plan.
Validation, process. (FDA) Establishing documented evidence which provides a high degree of assurance that a specific process will consistently produce a product meeting its predetermined specifications and quality characteristics.
Validation, software. (NBS) Determination of the correctness of the final program or software produced from a development project with respect to the user needs and requirements. Validation is usually accomplished by verifying each stage of the software development life cycle. See: verification, software.
Validation. prospective. (FDA) Validation conducted prior to the distribution of either a new product, or product made under a revised manufacturing process, where the revisions may affect the product's characteristics.
Validation. retrospective. (FDA) (1) Validation of a process for a product already in distribution based upon accumulated production. testing and control data. (2) Retrospective validation can also be useful to augment initial premarket prospective validation for new products or changed processes. Test data is useful only if the methods and results are adequately specific. Whenever test data are used to demonstrate conformance to specifications, it is important that the test methodology be qualified to assure that the test results are objective and accurate.
Validation. verification. and testing .(NIST) Used as an entity to define a procedure of review, analysis, and testing throughout the software life cycle to discover errors. determine functionality, and ensure the production of quality software.
Validation.(1) (FDA) Establishing documented evidence which provides a high degree of assurance that a specific process will consistently produce a product meeting its predetermined specifications and quality attributes. Contrast with data validation.
Value Added Activity An activity in a process that adds value to an output product or service, that is, the activity merits the cost of the resources it consumes in production.
Value Added Any action, activity, or process that adds direct value to the output of the action, activity, or process .
Value added Each time work is done to inputs to transform them into something of greater usefulness as an end product.
VARIABLE A characteristic that may take on different values.
Variable Cost A cost element that varies directly with the amount of product or service produced by an activity or cost. Variable costs go to zero if the activity stops.
Variable trace .(IEEE) A record of the name and values of variables accessed or changed during the execution of a computer program. Syn: data-flow trace, data trace, value trace. See: execution trace, retrospective trace, subroutine trace, symbolic trace.
variable. A name, label, quantity', or data item whose value may be changed many times during processing. Contrast with constant.
VARIABLES DATA Numerical measurements made at the interval or ratio level; quantitative data, e.g., ohms, voltage, diameter; subdivisions of the measurement scale are conceptually meaningful, e.g., 1.6478 volts.
Variables Data Are quantitative results where measurements are used for analysis. Examples include the diameter of a bearing journal in millimeters, the closing effort of a door in newtons, the concentration of an electrolyte in percent, and the torque of a fastener in newton meters.
Variables data Data that is measured on a continuous and infinite scale such as temperature, distance, and pressure rather than in discreet units or yes/no options. Variables data is used to create histograms, some control charts, and sometimes run charts.
Variables Data Quantitative data, where measurements are used for analysis.
Variance A measure of deviation from the mean in a sample or population.
VARIATION Any quantifiable difference between individual measurements; such differences can be classified as being due to common causes (random) or special causes (assignable)
Variation Change in the output or result of a process. Variation can be caused by common causes, special causes, tampering, or structural variation.
VARIATION RESEARCH Procedures, techniques, and methods used to isolate one type of variation from another (for example, separating product variation from test variation).
Variation The differences among individual outputs of a process .
Vendor. A person or an organization that provides software and
(or hardware and/or firmware and/or documentation to the user for a fee or in exchange for services. Such a firm could be a medical device manufacturer.
Verifiable. Can be proved or confirmed by examination or investigation. See: measurable.
Verification Establishing proof that a design, product, or process is within specifications.
verification, software. (NIBS) In general the demonstration of consistence completeness, and correctness of the software at each stage and between each stage of the development life cycle. See: validation, software.
Verify. (ANSI) (1) To determine whether a transcription of data or other operation has been accomplished accurately. (2) To check the results of data entry; a.g., keypunching. (3) (Webster) To prove to be true by demonstration.
Version number. A unique identifier used to identify software items and the related software documentation which are subject to configuration control. The execution of a virus program compromises a computer system by performing unwanted or unintended functions which may be destructive.
Version. An initial release or a complete re-release of a software item or software element. See: release.
VI Visual Information
Vision Often incorporated into an organizational mission (or vision) statement to clarify what the organization hopes to be doing at some point in the future. The vision should act as a guide in choosing courses of action for the organization.
Vision Statement Vision and Mission have a cause and effect relationship. Vision should reflect what the organization sees for itself 5 10 years down the road. The short time frame helps assure that the organization revitalizes itself every decade or so. The Vision statement should contain direction (improve, decrease, etc.) + indicator (quality, customer satisfaction, etc.) + target value (how much, #, %, etc.) + time limit (by when).
Voice of the Customer Customer feedback both positive and negative including likes, dislikes, problems and suggestions.
Voice of the Process Statistical data that is feedback to the people in the process to make decisions about the process stability and/or capability as a tool for continuous improvement.
Volume. (ANSI) A portion of data, together with its data carrier, that can be handled conveniently as a unit;
e.g., a reel of magnetic tape, a disk pack, a floppy disk.
VV&A Verification, Validation, and Accreditation
VV&C Verification, Validation and Certification
VV&T. validation, verification, and testing.