Validation

The process of confirming that a product, service, or system meets the needs and requirements of its intended use or customer.
See also: Verification, Quality Assurance

Value added

Any activity that transforms a product or service in a way that the customer is willing to pay for.
See also: Non-Value Added, Lean Manufacturing

Value engineering

A systematic method to improve the value of a product or process by analyzing its functions and reducing cost without sacrificing quality.
See also: Cost Reduction, Process Improvement

Value stream

All the activities and steps (both value-added and non-value-added) required to bring a product or service from start to finish.
See also: Value Stream Mapping, Lean Manufacturing

Value stream loops

Subsections of a value stream, often used to break down complex processes into manageable segments for analysis and improvement.
See also: Value Stream, Process Mapping

Value stream mapping

A visual tool used to analyze and design the flow of materials and information required to bring a product or service to the customer.
See also: Process Mapping, Lean Manufacturing

Value-added activity

An action or step in a process that directly increases the value of a product or service from the customer’s perspective.
See also: Value Added, Non-Value Added Activity

Variables data

Quantitative data that can be measured on a continuous scale, such as length, weight, or temperature.
See also: Attribute Data, Data Types

Variables sampling

A sampling method that uses measurements of continuous data to assess process performance or product quality.
See also: Attribute Sampling, Sampling Methods

Variance

A statistical measure of the spread or dispersion of a set of data points around their mean.
See also: Standard Deviation, Statistical Analysis

Variance (statistical)

See: Variance

Verification

The process of checking that a product, service, or system meets specified requirements or standards.
See also: Validation, Quality Control

Verification and validation (V&V)

A combined process to ensure a product, service, or system is built correctly (verification) and is the right solution for its intended use (validation).
See also: Verification, Validation

Visual controls

Simple, visible signals or devices that provide information about process status, performance, or standards at a glance.
See also: Visual Management, Andon

Visual factory

A workplace where information about operations, performance, and standards is communicated visually to enhance understanding and efficiency.
See also: Visual Management, Visual Controls

Visual management

The use of visual signals, displays, and controls to communicate information quickly and clearly in the workplace.
See also: Visual Controls, Visual Factory

Visual management board

A display board used to communicate key performance indicators, project status, or other important information visually to teams.
See also: Visual Management, Visual Controls

Visual workplace

A work environment designed to make information, standards, and performance visible to everyone, supporting efficiency and problem-solving.
See also: Visual Factory, Visual Management

Voice of customer (VOC)

The needs, expectations, and preferences of customers, gathered through surveys, interviews, or feedback, to guide product or process improvements.
See also: Customer Requirements, Voice of the Customer

Voice of process (VOP)

The information and data generated by a process, reflecting its capability and performance.
See also: Process Capability, Voice of the Process

Voice of the customer

See: Voice of customer (VOC)

Voice of the process

See: Voice of process (VOP)