Hello!
I want to calculate simultaneous confidence intervals for a nominal variable
with three categories: "yes", "no", "partially" and I expect that far more than
5 samples fall into each category.
I have read that Glaz & Sison's method is only appropriate for variables with 7
or more categories. Therefore, the Goodman method seems like a good idea.
I have found the R function "MultinomCI" {DescTools} to calculate these CIs.
However, I have not found a way to calculate in advance the required sample
size for the Goodman method at a fixed confidence level and length of the
intervall.
I would be very grateful for any suggestion.
Many thanks in advance!
Claudia
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