I really like the animations. I think they are a geat way to get a feel for the difference between Cp & Cpk, and alos to show how the values change as the process changes.
How did you create these animations? I have been thinking about doing such animations myself for a couple different projects?
One critique: on the bottom animation, shouldn't it really say "Capable/Not Capable" rather than "In Control/Out of Control"? Whether or not the process is outside the spec limits, the process can still be in control (or out of control). A control chart - not a histogram or Cpk calculation - would be the tool to determine control.
Tim F