KC 1.4.1 - Quality Assurance & Quality Control

Quality Assurance

A planned and systematic set of activities to ensure that variances in processes are clearly identified, assessed and improving defined processes for fullfilling the requirements of customers and product or service makers.

A planned and systematic pattern of all actions necessary to provide adequate confidence that the product optimally fulfils customer's expectations.

A planned and systematic set of activities to ensure that requirements are clearly established and the defined process complies to these requirements.

"Work done to ensure that Quality is built into work products, rather than Defects." This is by (a) identifying what "quality" means in context; (b) specifying methods by which its presence can be ensured; and (c) specifying ways in which it can be measured to ensure conformance.

Quality Control

Also called statistical quality control. The managerial process during which actual process performance is evaluated and actions are taken on unusual performance.It is a process to ensure whether a product meets predefined standards and requisite action taken if the standards are not met.

Quality Control measures both products and processes for conformance to quality requirements (including both the specific requirements prescribed by the product specification, and the more general requirements prescribed by *Quality Assurance*); identifies acceptable limits for significant *Quality Attributes*; identifies whether products and processes fall within those limits (conform to requirements) or fall outside them (exhibit defects); and reports accordingly. Correction of product failures generally lies outside the ambit of Quality Control; correction of process failures may or may not be included.