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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Are there nonrandom patterns on the chart?
Yes No
Are there runs on the control chart?
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:
Are there any points falling outside the control limits?
You do not have enough data to get good estimates of process spread and location. For a more accurate picture of your process, you should have at least 100 data values or 20-25 subgroups (samples).
Is there a p-, np-, c- or u-chart?