I'm trying to construct a choice experiment design that isn't a true branded application and I can't seem to find an example on the Internet for it.
I have 3 brands: BrandA, BrandB, BrandC. Each brand has a specific price vector assigned to it. All other product attributes are the same (or will be the same in testing).
Ex: BrandA has prices from $1.5 to $3.5; BrandB has prices from $3.5 to $7; BrandC has prices from $5 to $9. Color options are red, blue, and yellow for all the brands. Size options are 5oz, 6oz, and 7oz for all the brands. Etc.
I tried following a generic experimental design with the following code, but it doesn't give me what I need, and the d-efficiency score is extremely low:
You can email me (saswfk at sas dot come) if this does not help. This seems to be an approach to do what you want. Do not expect a large efficiency value from choiceff. In pre-9.2, it is not on a useful scale. This all changes in 9.2 (at least for some problems) and is discussed in detail in my new book, which is not released yet. I can however on request provide a sneak preview of one of the most useful chapters in this regard.