choice-metrics.com

Posted: **Thu Jan 28, 2016 9:22 pm**

Hi all

I'm used to conduct DoE for several alternatives but I need to run
- an orthogonal design in order to define situations to test a product
Factors :
type[1,2,3,4]
moment[1,2,3]
position[1,2,3]
rame[1,2,3]
control[1,2,3]$
-I could have a constraint I may can't go over 32 tests..

That for your help
Naji

Posted: **Fri Jan 29, 2016 8:27 am**

There does not exist an orthogonal design smaller than 32 rows, but there does exist a design with 36 rows. Of course you can block it so that you show only a subset to each respondent.

You can generate this design as follows:

Code: Select all

design
;alts = alt1, none
;rows = 36
;block = 2
;orth = sim
;model:
U(alt1) = b1 * type[1,2,3,4] + b2 * moment[1,2,3] + b3 * position[1,2,3] + b4 * rame[1,2,3] + b5 * control[1,2,3]
$

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