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Understanding The New Statistics by Geoff Cumming

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4

Confidence Intervals, ErrorBars, and p Values

This chapter presents more about CIs, including some beautiful pictures and two further approaches to CI interpretation. The main issues are

  • Error bars, and how they can show various types of information in figures
  • Cat's-eye pictures that show the beautiful shape of a CI
  • The fourth approach to interpreting CIs—in terms of their shape
  • The relation between CIs and p values
  • The fifth approach to interpreting CIs—with reference to p values
  • One-sided CIs, which correspond to one-tailed NHST

The Error ...

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