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Is Your Process on Its Best Behavior?

Summary: When viewing data in a time series, Six Sigma practitioners are cautiously aware of trends and seasonality effects. A deseasonalized and a trend process behavior chart illustrate the disadvantages of time series modeling where a cause and effect model with noises impacts the process. It is then shown how a process behavior chart can be used to forecast and understand cause and effect relations in the process. A process behavior chart helps identify routine variation from exceptional variation.

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