Tag: statistical process control

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What is PPM (Parts Per Million) in Industrial Quality?

PPM means Parts Per Million (in English Parts Per Million) and is a metric used to measure the defect rate in a production process or testing system. PPM indicates how many defective parts exist per million units produced, being one of the main performance indicators in quality. The lower the

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What is CPK – Process Capability?

The CPK (Process Capability Index) is a statistical indicator used to measure how well a process is performing in relation to its tolerance specifications. It shows whether the process is centered and stable enough to produce within the acceptable limits defined by the design or standard. Why is CPK important?