Regression Diagnostics With Dynamic Graphics


Cook, R. Dennis; Weisberg, Sanford   (1989, ASQC and the American Statistical Association)   University of Minnesota, St. Paul, MN

Technometrics    Vol. 31    No. 3
QICID: 9399    August 1989    pp. 277-291
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Article Abstract

Editor's Note: This article and the first two discussions were presented at the Technometrics session of the annual meeting of the American Statistical Association, held in Washington, D.C., August 7-11, 1989.We develop uses for two recently proposed types of dynamic displays - rotation and animation - in regression diagnostics. Some of the general issues that we address by using these displays include checking for interactions and normality, assessing the need to transform the data, and adding predictors to a model. Animation is used in probability plotting and as an aid to understanding the effects of adding variables to a model. Rotation is used for three-dimensional added-variable and residual plots, each of which may be effective for diagnosing the presence of an interaction.


Added-variable plots,Animation,Interactions,Graphical methods,Residuals,Rotatability,Transformation

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