Median polish

From Wikipedia, the free encyclopedia

The median polish is an exploratory data analysis procedure proposed by the statistician John Tukey. It finds an additively-fit model for data in a two-way layout table (usually, results from a factorial experiment) of the form row effect + column effect + overall median.

[edit] References

• Frederick Mosteller and John Tukey (1977). "Data Analysis and Regression". Reading, MA: Addison-Wesley. ISBN 020104854X.
• J.D. Emerson and D.C. Hoaglin (1983). "Analysis of two-way tables by medians". In "Understanding Robust and Exploratory Data Analysis", eds D. C. Hoaglin, F. Mosteller and J. W. Tukey. New York: John Wiley & Sons. ISBN 0471384917. pp. 165–210.
• William N. Venables and Brian D. Ripley (2002). Statistics Complements to Modern Applied Statistics with S, p.4–5. ISBN 0-387-95457-0.
• Help page with details for the Implementation in R.

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