The Process Sigma or Sigma Level

  • is the concept of translating the yield
  • Sigma Level refers to the number of process standard deviations (Sigma; σ), between the mean and the closest specification for a process output.
  • emphasizes exponential improvement and perfection as the goal
  • embeds customer requirements into performance measurement
  • allows the comparison of different business processes
  • requires a definition of what a defect is

Process Sigma
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