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CYM 10-1 Chapter 10 Examination of Residuals ST3131 Regression Analysis
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CYM 10-2 Overview •Assumptions on the error terms: –Constant variance –Normality distributed – Independence •Residual plots –Plot residual against sequence number –Plot residual against fitted value –Plot residual against predictor, xk–Plot residual against other predictor variables not in the model •Patterns of residual plots ST3131 Regression Analysis