The following statements help differentiate quality control from quality assurance:
• Quality control relates to a specific product or service.
• Quality control verifies whether specific attribute(s) are in, or are not in, a specific product or service.
• Quality control identifies defects for the primary purpose of correcting defects.
• Quality control is the responsibility of the team/worker.
• Quality control is concerned with a specific product.
• Quality assurance helps establish processes.
• Quality assurance sets up measurement programs to evaluate processes.
• Quality assurance identifies weaknesses in processes and improves them.
• Quality assurance is a management responsibility, frequently performed by a staff function.
• Quality assurance is concerned with all of the products that will ever be produced by a process.
• Quality assurance is sometimes called quality control over quality control because it evaluates whether quality control is working.
• Quality assurance personnel should never perform quality control unless it is to validate quality control.
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