Can you have a stable trend if the line made up of linked data points is continuously up and down? ...

Can you have a stable trend if the line made up of linked data points is continuously up and down? Draw a diagram indicating your answer.
 
  yes or no?

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What do you make of a situation where the client's behavior changes from bad to good to bad during baseline? Should you start the intervention with a sense of stability, if curvilinear, behaviors?
 
  Yes or No?

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If you were able to show statistical significance and theoretical significance, but no practical significance in a given evaluated case situation, should you consider terminating the intervention for this target?
 
  Yes or No?