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Choice Design

Hello everyone! I am trying to do a fractional factorial design for a choice experiment, with one constraint. Is anyone aware on how to do it? I have three factors, 2 with 3 levels and 1 with 2 levels: L1: A B and C; L2: F D and J; L3: Black and Red. When the last is Red, it does only combine with D, but not with F or with J, though it does with A B & C. Can anyone help?

Re: Choice Design

Indeed, but then it is not easy to build the choices.

Re: Choice Design

Sorry for my mistake on the bad link.

Re: Choice Design

I have Access Denied to see the thread :S

Re: Choice Design

Can you generate the choice design without constraints and remove the combinations that can not be performed.

Re: Choice Design

Hi!! Thank you for your answer!! It works in custom design, but I do not have the option within choice experiment. Also, what I would want is, following my example, that the combination X1=L2 with X3 to be excluded. Not X1=L1 or X1=L2, but X1=L2 with X3 (any of the levels). Any thoughts most welcome!

Re: Choice Design

Will this do it?

Screen Shot 2017-07-03 at 9.12.47 PM.png

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