Mastery - A
System That Never
Fails You

Professional Mastery


Performance Mastery


Ten Commitments
of Mastery


Mastery Resources





Studying, the third phase of the Plan, Do, Study, Act process, "Study", requires us to look at what we have done, and evaluate it.  Did it accomplish what we expected?  Were there unintended consequences?  Is there a better way we could do it next time?

In order to answer these questions, we look at the system, and evaluate it and its outcomes.  We measure data and variation using statistical processes.  The resources on this page will help you "Study."


Cause and Effect Diagram (Ishikawa Diagram)
Cause and effect diagrams visually plot causes of a certain event.  Causes are usually grouped into major categories to identify these sources of variation

Management Sciences for Health and UNICEF


Control Chart
Control charts are tools used to determine whether or not a  business process is in a state of statistical control.



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Learning and Growth Process



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