Statistics › Section H · Confidence intervals › Topic H.6
From intervals to decisions
An interval of 0.4 to 3.8 points says more than "B won": it says how big the win could be and how small. Learning to read the bounds against the decision is what turns an interval into action.
In this topic
- Intervals are decision tools
- Plausible values
- Precision and decisions
- One-sided intervals
- Worked example: the A/B test
- Worked example: a decision the interval cannot make
- Planning: power and precision
- Communicating uncertainty
- Uncertainty beyond sampling
- Common mistakes to avoid
- Key takeaways
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