statistical differences between products evaluation using incomplete block design

Posted by Alexandra Chirilov-2 on Sep 29, 2011; 7:53am
URL: http://spssx-discussion.165.s1.nabble.com/statistical-differences-between-products-evaluation-using-incomplete-block-design-tp4852186.html

Dear list,

I have a problem...one of our client wants to evaluate 6 products in a CLT!
We propose him a balance incomplete block design (BIBD) (3 products per
respondents). I generate a quite balance design (D-efficiency = 0.8).

I have never used before BIBD (I used only complete design) and I don't have
any idea how to statistically compare the products' evaluation? What
statistical test should I use in order to say that product A is better
perceived than product B (e.g.: 8.97 significantly higher than 8.80)?


Thank you very much,
Alex

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