Bland–Altman plot

Not to be confused with Gardner–Altman plot.

A Bland–Altman plot (or Bland–Altman difference plot) in analytical chemistry or biomedicine is a method of data plotting used in analyzing the agreement between two different assays. It was popularised in medical statistics by J. Martin Bland and Douglas G. Altman. In other fields, it is also called a Tukey mean-difference plot, named after John Tukey.

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