Variables step-by-step interpretation

Is there a range or sigma chart?

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Attributes step-by-step interpretation

There are no special causes of variation and the process appears to be in control at this time. Continue monitoring the process, since variation and process shifts can occur at any time.

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Attributes step-by-step interpretation

The process is not in control. Investigate the cause(s) of the variation and determine if effects are good or bad. For more information, select:

Declare the system stable or unstable.

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Attributes step-by-step interpretation

Are there nonrandom patterns on the chart?

Yes No

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Attributes step-by-step interpretation

The process is not in control. Investigate the cause(s) of the variation and determine if effects are good or bad. For more information, select:

Declare the system stable or unstable.

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Attributes step-by-step interpretation

Are there runs on the control chart?

Yes No

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Attributes step-by-step interpretation

The process is not in control. Investigate the cause(s) of the variation and determine if effects are good or bad. For more information, select:

Declare the system stable or unstable.

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Attributes step-by-step interpretation

To analyze nonconforming items, create a p- or np-chart. To analyze the number of nonconformities, create a c- or u-chart. For more information, select:

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Attributes step-by-step interpretation

Are there any points falling outside the control limits?

Yes No

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