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How can a product pass inspection while its production process drifts?

A factory part can fall within its allowed dimensions while a series of measurements starts drifting in an unusual direction. Product specifications and statistical control limits answer different questions. Explore why inspecting the finished item and monitoring the process can lead to different decisions.

5–7 min

Questions you could explore

  • What might an unusual but acceptable measurement prompt someone to investigate?
  • How do process control limits differ from a customer's product specifications?

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