Hi everyone,
With SPSS when I run a simulation with conjoint analysis I got this message:
"142 out of 155 subjects are used in the Bradley-Terry-Luce and Logit methods because these subjects have all nonnegative scores".
I think SPSS excluded those respondents because their simulated score was negative for some profiles.
Each excluded respondent displays this message:
"Negative simulation scores or all zero simulation scores are found. This subject will not be included in computing preference probabilities using the Bradley-Terry-Luce or Logit methods"
Is there a way to include the excluded subject?
Is it possible to avoid this issue with other softwares?
Thank you very much,
Fabio Spinnato
With SPSS when I run a simulation with conjoint analysis I got this message:
"142 out of 155 subjects are used in the Bradley-Terry-Luce and Logit methods because these subjects have all nonnegative scores".
I think SPSS excluded those respondents because their simulated score was negative for some profiles.
Each excluded respondent displays this message:
"Negative simulation scores or all zero simulation scores are found. This subject will not be included in computing preference probabilities using the Bradley-Terry-Luce or Logit methods"
Is there a way to include the excluded subject?
Is it possible to avoid this issue with other softwares?
Thank you very much,
Fabio Spinnato