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Error Bars

Whiskers that show how uncertain each estimate is.

The idea

Error bars draw the uncertainty around each value, such as a confidence interval, so readers see how firm an estimate is. A forest plot lines up many estimates against a line of no effect. Say what the bar means, because it can be a range, an error or an interval.

Where to use it

  • Confidence intervals from a survey
  • Results of several studies in a forest plot
  • Measurements with a margin of error
  • Comparing estimates across groups

Templates

Start from any of these templates and swap in your own data.

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