Unformatted text preview: Y i versus each predictor and describe what you see. Fit a standard regression model to these data and plot residuals versus the ﬁtted values. Is constant variance reasonable here? Now ﬁt Poisson regression. 14.39 (a,c,d). Use the standard Wald test for (c) from SAS. Finally, obtain the studentized Pearson residuals and plot then versus ﬁtted values and each predictor x 1 , x 3 , and x 4 to check model ﬁt. Does it ﬁt okay? 1...
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- Fall '11
- Regression Analysis, Wald, flu shots, sample SAS code, standard SAS output