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.
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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.