Galbraith plot

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Galbraith Plot

In statistics, a Galbraith plot (also known as Galbraith's radial plot or just radial plot), is one way of displaying several estimates of the same quantity that have different standard errors.[1] It can be used to examine heterogeneity in a meta-analysis, as an alternative or supplement to a forest plot. To produce a Galbraith plot, first calculate the standardized estimates or z -statistics by dividing each estimate by its standard error (SE). The Galbraith plot is then a scatter plot of each z -statistic (vertical axis) against 1/SE (horizontal axis). Larger studies (with small SE and larger 1/SE) aggregate away from the origin.[1]

[edit] References

  1. ^ Galbraith, Rex (1988). "Graphical display of estimates having differing standard errors". Technometrics 30 (3): 271--281. doi:10.2307/1270081. 

[edit] See also

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