Question: Question 7 (12 points) Question 6: (12 points] Consider a multiple linear regression model with five covariates. (a) (8 points) Using the provided plots, identify

Question 7 (12 points) Question 6: (12 points] Consider a multiple linear regression model with five covariates. (a) (8 points) Using the provided plots, identify outliers, leverage, and influential points. (b) (3 points) Will using the provided plots always identify all influential points? Briefly justify your answer. (c) (1 point) Give one reason you may choose to remove an outlier from your final analysis. Cook's D for Y 05 020 015 Cook's D 010 005 . 0D 10 30 20 Observation Influence Diagnostics for Y 1.5 10 05 4 0.0 G -0.5 -10 40 20 10 30 Observation Influence Diagnostics for Y 1 Intercept 2 10 263 2 OS 24 100 III -0.5 26 10 0 10 20 130 0 0 110 120 30 40 10 10 20 30 DFBETAS 3 14 XS 10 126 1 D 27 1000 1 . -05 138 110 0 20 20 110 30 10 10 120 130 140 10 101 120 130 Observation Outlier and Laverage Diagnostics for Y 2 0 O O O RStudent O . OG O o OO o O O 0 -2 EO 0 1 ZO Leverage rage o Outlier and Leverage Question 7 (12 points) Question 6: (12 points] Consider a multiple linear regression model with five covariates. (a) (8 points) Using the provided plots, identify outliers, leverage, and influential points. (b) (3 points) Will using the provided plots always identify all influential points? Briefly justify your answer. (c) (1 point) Give one reason you may choose to remove an outlier from your final analysis. Cook's D for Y 05 020 015 Cook's D 010 005 . 0D 10 30 20 Observation Influence Diagnostics for Y 1.5 10 05 4 0.0 G -0.5 -10 40 20 10 30 Observation Influence Diagnostics for Y 1 Intercept 2 10 263 2 OS 24 100 III -0.5 26 10 0 10 20 130 0 0 110 120 30 40 10 10 20 30 DFBETAS 3 14 XS 10 126 1 D 27 1000 1 . -05 138 110 0 20 20 110 30 10 10 120 130 140 10 101 120 130 Observation Outlier and Laverage Diagnostics for Y 2 0 O O O RStudent O . OG O o OO o O O 0 -2 EO 0 1 ZO Leverage rage o Outlier and Leverage

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