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Tips:Plotting Residuals in Linear Regression

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Sometimes, it is useful for analyst to analyze the residuals of a linear regression model to check for non random effects. This is easily done in PROC REG by declaring it as part of the plots.

proc reg data=<data>;
    MODEL Y = X;
    PLOT RESIDUAL. * X;
run; quit;

Notice the use of the period (.) following the keyword RESIDUAL.

Submitted by Murphy Choy. Contact me at my Discussion Page.