When using SPSS custom tables and column proportions (z-test), this is in the output if the column proportion is equal to 0 or 1, "This category is not used in comparisons because its column proportion is equal to zero or one". This happens when 0% or 100% of respondents select an option.
When this occurs, should I not report any significant differences because it couldn't run the stat test? Is there something I can do with custom tables to get around this or should I be using another test?
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