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Quality Assurance (QA) is a process that ensures the quality of a product, service, or system meets specific requirements. It involves planned and systematic activities implemented in a project to fulfill quality requirements. In contrast, Quality Control (QC) focuses on identifying quality defects within a product. The 7 QC tools, such as check sheets, control charts, histograms, Pareto charts, cause-and-effect diagrams, scatter diagrams, and flowcharts, are used to analyze and improve processes. QA and QC are crucial in fields like cryptocurrency and finance to maintain system integrity and customer trust.

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