For the latest version of JMP Help, visit JMP.com/help.


Design of Experiments Guide > Sample Size Explorers > Confidence Interval Explorers
Publication date: 07/15/2025

Confidence Interval Explorers

Use the confidence interval explorers to select a study sample size to obtain an interval estimate with prespecified characteristics. Explore the impact of sample size on the margin of error of an interval estimate. You can also explore sample size requirements for:

• confidence, prediction, or tolerance intervals for one mean

• confidence intervals for two means

• confidence intervals for one or two proportions

• confidence intervals for one or two variances

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

• Confidence Interval for One Sample Mean

• Confidence Interval for One Sample Proportion

• Confidence Interval for One Sample Variance

• Confidence Interval for One Sample Counts per Unit

• Confidence Interval for Two Independent Sample Means

• Confidence Interval for Two Independent Sample Proportions

• Confidence Interval for Two Independent Sample Variances

• Confidence Interval for Two Independent Counts per Unit

Want more information? Have questions? Get answers in the JMP User Community (community.jmp.com).