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Hali
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testing center composite designs against missing observations

Hi there, I built a new central composite design. I want to test it again missing observations. is there any ready package can help me do that test?

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Re: testing center composite designs against missing observations

Hali,

Could you clarify a little more.  Is this a case where you have started the design runs and you want to see how you things are progressing? Or have you run into a roadblock and cannot complete the design?  

 

Re: testing center composite designs against missing observations

Maybe to add a bit to what Bill is asking...if you have part of the design completed...depending what's 'in' and what's 'out'...you can start analyzing the design as you would normally, with an eye towards recognizing what you will lose by not having a fully completed design. Say, you have yet to complete the axial points...well estimating quadratic effects isn't possible.

 

Or, if you've got a subset of the original design, then using the Compare Designs platform can give you some idea of the effects of missing observations on things like power, fraction of design space, color map on correlations, etc.