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Math Help - Calculating the confidence interval of a survey when "sample space > 2"

  1. #1
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    Calculating the confidence interval of a survey when "sample space > 2"

    Hello.

    I have conducted a survey in which the surveyed could answer: {yes, no, maybe}

    Hereīs the issue: I want to calculate the confidence interval for each of these three proportions (respective answers to number of people surveyed) and while I know how to do it for two proportions, I do not know how to do it for three.

    Thanks in advance
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  2. #2
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    This is a good question. I have never encountered it myself either.

    I will add the following.

    If you have a sample and want to know the true proportion of participants voting "yes" and your estimator or sample proportion is 'p' then '1-p' will represent those voting "no" and "maybe".

    Likewise

    If you have a sample and want to know the true proportion of participants voting "no" and your estimator or sample proportion is 'p' then '1-p' will represent those voting "yes" and "maybe".

    and finally,

    If you have a sample and want to know the true proportion of participants voting "maybe" and your estimator or sample proportion is 'p' then '1-p' will represent those voting "no" and "yes".

    That's my thinking, happy for others to correct me.
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