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Hi,

below is the syntax I used to generate a Bayesian efficient design.

Design
;alts = alt1*, alt2*,alt3*
;rows = 24
;block = 6
;eff = (mnl,d,mean)
;model:
U(alt1) = colour.dummy[(n,-1.16,0.35)|(n,-1.19,0.37)|(n,-1.62,0.36)] * colour[0,1,2,3] + b3[(u,-1,0)] * taste[0,1]+ b4[(n,-0.58,0.23 ...

hullo Michiel,
I got your feedback and it answers my question. thank you.

regards,

medard

hi,

the last time I asked about use of priors are that are not significant, you told me to use a Bayesian efficient design for a prior that is marginally insignificant. now suppose I have a prior that is very insignificant, do I still use it in that way?

secondly, I ran a binary logit with no ...

Hi Andrew,
thank you, together with your entire team



regards medard

hi,

can I say the I will use a binary logit to analyze data from pilot survey since I don't have the third alternative of opt-out?
secondly, can I use the RPL on the pilot survey data with two alternatives?




medard

Greetings Michiel

I have two questions though they seem to be general.

in generating orthogonal designs to use in the pilot survey, do I need to include the "opt-out" option or it only appears during efficient design?

secondly, while analyzing data for the pilot study to obtain priors, do I ...

hullo Michael,

I try to get your explanation. my question still is how to obtain the two priors for the two levels if I had not provided for two parameters in the initial utility function. I thought that in order to obtain two priors, I must have made a provision for two parameter estimates in the ...

Dear Michael,
thank you for the feedback. am trying all the options that you are giving. though you already pointed out that my questions are general, am gaining a lot from you. my interest is actually to investigate attributes of each product and vary them in order to capture trade-offs between ...

hullo Michael,
I posted a question about labeling alternatives. you said it more of a general question. to be specific, the background of my study is thus: there is limited demand for sorghum products due to undesirable attributes in the current sorghum varieties. the aim of my study is to determine ...

hullo, am doing a study on preferences for sorghum grain. am specifically studying three products made out of the grain, that is, porridge, beer and bread. my question is whether I should make a design for each of the products. which is the best way to handle this? what complicates the matter is the ...