Question: Consider the electric power consumption data in Exercise 12-6. (a) Calculate R2 for this model. Interpret this quantity. (b) Plot the residuals versus and versus

Consider the electric power consumption data in Exercise 12-6.

(a) Calculate R2 for this model. Interpret this quantity.

(b) Plot the residuals versus and versus each regressor.

Interpret this plot.

(c) Construct a normal probability plot of the residuals and comment on the normality assumption.

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