examtop - STA 6208 FINAL EXAM TOPICS Fall 2011 Material...

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Unformatted text preview: STA 6208 FINAL EXAM TOPICS Fall 2011 Material from Exams 1 and 2 Polynomial Regression, Response Surface Models with Dummy Variables Problem Areas in least squares: Nonnormality,Correlated Errors,Influential Points and Outliers,Collinearity,Durbin-Watson test Regression Diagnostics: DFFITS,DFBETAS,VIF Transformations: Intrinsically linear relationships, variance stabilizing transformations, Box-Cox transformation (Normality), Weighted least squares, Generalized least squares Nonlinear Regression Random Coefficient Regression Practice Problems I. A reserarcher believes that the relationship between output (Y) and labor intensity (X) is: 1 2 = X Y Give a transformation that linearizes this function, and give the relationship between the parameters of the original and transformed function. II. Show that the mean of the n leverage values for the obsevations is n p ' = III. Give } { ^ i Y s and give an intepretation of DFFITS I IV. Give } {...
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examtop - STA 6208 FINAL EXAM TOPICS Fall 2011 Material...

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