Confidence Intervals
Info sheet · Statistics for Psychology & Neuroscience
Warning✎ Editing notes — to do / to check
Working notes for the author — not shown to students once collapsed; remove before publishing.
What you’ll get from this sheet
By the end you should be able to:
- Interpret a confidence interval correctly.
- Relate the 95% CI to the standard error and the 68–95–99.7 rule.
A 95% confidence interval is estimate ± ~2 standard errors. Correct reading: over many repeated samples, 95% of such intervals contain the true value — not ‘95% chance the truth is in this one’.
[Main idea]
TODO — write the core explanation in transcript voice.
[Interactive demo]
TODO — native <input> + string-built SVG / OJS widget (see any built sheet for the pattern).
See it in code
# TODO# TODO
TipCheck your understanding
TODO — a short question.
TODO — the worked answer.
TODO — a common mistake and how to avoid it.
Where this shows up next
TODO — link to the relevant book chapter.