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 and respond to the information on the control chart.
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Are there points that are out of control on the X-bar, X, or median chart?
Yes No
Is there a range or sigma chart?
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.
Declare the system stable or unstable.
Are there nonrandom patterns on the chart?
Are there runs on the control chart?