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Inference by Eye: Pictures of Confidence Intervals and Thinking About Levels of Confidence
Article first published online: 10 SEP 2007
DOI: 10.1111/j.1467-9639.2007.00267.x
Additional Information
How to Cite
Cumming, G. (2007), Inference by Eye: Pictures of Confidence Intervals and Thinking About Levels of Confidence. Teaching Statistics, 29: 89–93. doi: 10.1111/j.1467-9639.2007.00267.x
Publication History
- Issue published online: 10 SEP 2007
- Article first published online: 10 SEP 2007
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Keywords:
- Teaching;
- Confidence intervals;
- Displaying data;
- p-values;
- Interactive software
Summary
A picture of a 95% confidence interval (CI) implicitly contains pictures of CIs of all other levels of confidence, and information about the p-value for testing a null hypothesis. This article discusses pictures, taken from interactive software, that suggest several ways to think about the level of confidence of a CI, p-values, and what conclusions can be drawn from inspecting a CI.