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Thank you very much for the reply... 50-50 is undesirable but 30, 70 seems fine though and yes your reply helps very much thank you ....

Thank you for the reply, i am currently designing pivot designs where i have three population segments and am using the fisher(heterogeneous pivot design) property to get three designs, in doing so its difficult to get Utility balance design using b-error. Rather when i design three designs ...

Hi everyone its a simple and silly question i was wandering about.

While generating the designs pivot around a reference alternative as (reference alternative, alternative A, alternative B) to check the dominance should the probability of reference also be looked at or the probability of A and B ...