choice-metrics.com

Hello members,

my question is wheter it is possible to produce a blocked design with deifferent attribute levels per block. For example, I have the attribute price with the levels 5, 10, 15, 20. Now I want to have 5 and 10 in the first block and 15 and 20 in the second block. A further attribute might be distance to home with 1, 2, 3, 4 km. These attribute levels should vary free between both blocks.

Thank you in advance.

Best regards
Michael

That is not directly possible with Ngene, but you could so one of the following:

1. Generate two separate designs, or
2. Add an artificial attribute called Block and impose constraints something like ;cond; if(alt1.Block=1, price=[5,10]), if(alt1.Block=2, price=[15,20]).

Michiel