Lesson 8 of 12Article17 min
Confidence Intervals
A 95% CI is a method that, in repeated sampling, covers the true parameter about 95% of the time. One realised interval either covers or does not — the confidence is in the procedure.
Plausible ranges for parameters
A 95% CI is a method that, in repeated sampling, covers the true parameter about 95% of the time. One realised interval either covers or does not — the confidence is in the procedure.
- Wider confidence level → wider interval.
- Larger n → narrower interval.
- Do not say "95% probability the parameter is in this interval" in the frequentist interpretation.