What is it: Confidence Interval for a Proportion gives us some idea of the range of values which an unknown population parameter is likely to take based on a given set of sample data. The procedure for obtaining such an interval is based on the proportion.
How to use it: When Estimating a Proportion by way of the confidence interval, make sure however that the sampling method is simple random sampling, meaning that all possible samples of objects are equal likely to occur.
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