Simulating Confidence Intervals

Explore how confidence intervals capture the true population parameter

How it works

Generate multiple confidence intervals and see what percentage contains the true population mean μ. In the long run, this should match your confidence level!

Key feature: After sampling, switch between methods to compare their coverage on the same data!

z known: uses population σ | z unknown: uses sample s | t: accounts for small samples
Confidence Intervals
■ Contains μ    ■ Does not contain μ    - - - True mean (μ)
Press 'Sample' to generate confidence intervals. After sampling, you can switch between methods to compare their coverage on the same data.
Most Recent Sample Means
- - - True mean (μ)
Sampling Distribution of the Sample Mean
- - - True mean (μ)