Assume a Process Has Limits Set at ±3 Standard Errors

question 119

Essay

Assume a process has limits set at ±3 standard errors from the centerline.The average run length (ARL)is 385.What does this mean?

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Definitions:

Bad Lots

Refers to batches of goods or products that do not meet the quality standards set by the manufacturer or industry.

Good Lots

In quality control, this term refers to batches of products that meet the specified quality standards.

Control Limits

are statistical boundaries set in process control charts that signal when a process may be out of control and corrective action may be needed.

X-bar

A symbol representing the sample mean or average in statistical analyses.