Confidence Interval Explorers

Use the confidence interval explorers to select a study sample size to obtain an interval estimate with pre-specified characteristics. Explore the impact of sample size on the margin of error of an interval estimate. Explore sample size for a confidence, prediction, or tolerance interval for one mean. Explore sample size for a confidence interval for two means, or one or two proportions or variances.

For interval estimation, select DOE > Sample Size Explorers > Confidence Intervals:

• Margin of Error for One Sample Mean

• Margin of Error for One Sample Proportion

• Margin of Error for One Sample Variance

• Margin of Error for One Sample Counts per Unit

• Statistical Details for the Margin of Error

• Margin of Error for Two Independent Sample Means

• Margin of Error for Two Independent Sample Proportions

• Margin of Error for Two Independent Sample Variances

• Margin of Error for Two Independent Counts per Unit

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