Understanding Confidence Intervals for Proportions

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*Front:* Confidence Interval

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of values for estimating a population parameter

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*Front:* Proportion

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of the total that possesses a certain attribute

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proportion in the entire population

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*Front:* Margin of Error

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expected difference between the true population parameter and a sample estimate

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*Front:* Standard Error of Proportion

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latex="\sqrt{\frac{\hat{p}(1-\hat{p})}{n}}">

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*Front:* Z-Score

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of standard deviations a data point is from the mean

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*Front:* Critical Value

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corresponding to the desired confidence level

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*Front:* 95% Confidence Level

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of approximately 1.96

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*Front:* 99% Confidence Level

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of approximately 2.576