Hi Alexandra, please address your questions to the whole list.

What do you mean by "help interpreting the results"? You should run a UNIANOVA with your data as as showed you in the example I sent. I forgot to add post-hoc pairwise comparisons, like Tukey, BTW.

Regards, Marta GG

El 29/09/2011 11:39, Alexandra Chirilov escribió: > Dear Marta, > > Could you be so kind in order to help me interpreting the results? > > > -----Original Message----- > From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU] On Behalf Of > Marta García-Granero > Sent: Thursday, September 29, 2011 12:17 PM > To: SPSSX-L@LISTSERV.UGA.EDU > Subject: Re: statistical differences between products evaluation using > incomplete block design > > El 29/09/2011 9:53, Alexandra Chirilov escribió: >> 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)? > Hi Alexandra: > > Time ago I managed to replicate the results for this balanced incomplete > block design I found in a book, using SPSS: > > Fert. Bl.1 Bl.2 Bl.3 Bl.4 Bl.5 > F1 94 96 100 92 - > F2 95 75 76 - 92 > F3 76 100 - 97 98 > F4 94 - 102 93 96 > F5 - 75 91 86 95 > > * Dataset * > data list list/Block Fert Yield (3 F8.0). > begin data > 1 1 94 > 2 1 96 > 3 1 100 > 4 1 92 > 1 2 95 > 2 2 75 > 3 2 76 > 5 2 92 > 1 3 76 > 2 3 100 > 4 3 97 > 5 3 98 > 1 4 94 > 3 4 102 > 4 4 93 > 5 4 96 > 2 5 75 > 3 5 91 > 4 5 86 > 5 5 95 > end data. > > *Analysis *. > UNIANOVA > Yield BY Fert Block > /RANDOM = Block > /METHOD = SSTYPE(1) > /INTERCEPT = INCLUDE > /DESIGN = Block Fert. > > It is important: > > - Use SSTYPE(1) instead of the default method - SSTYPE(3) > - The order of both factors in "/DESIGN" (last line) is blocks first, then > treatments > > HTH, > Marta GG > > ===================== > To manage your subscription to SPSSX-L, send a message to > LISTSERV@LISTSERV.UGA.EDU (not to SPSSX-L), with no body text except the > command. To leave the list, send the command SIGNOFF SPSSX-L For a list of > commands to manage subscriptions, send the command INFO REFCARD > >

===================== To manage your subscription to SPSSX-L, send a message to LISTSERV@LISTSERV.UGA.EDU (not to SPSSX-L), with no body text except the command. To leave the list, send the command SIGNOFF SPSSX-L For a list of commands to manage subscriptions, send the command INFO REFCARD