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The points plotting below the lower control limit of p-chart do not always represent the out-of-control process or an assignable cause.

The points plotting below the lower control limit of p-chart do not always represent the out-of-control process or an assignable cause. Correct Answer True

The point can be plotted below the LCL of p-chart because of errors in inspection process resulting from inadequately trained or inexperienced inspectors. Sometimes, inspectors pass deliberately the nonconforming units too.

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