Question: Suppose you estimate a multiple regression model with 10 predictors, x1, . . . , x10, and one response variable y. Which plot below would

Suppose you estimate a multiple regression model with 10 predictors, x1, . . . , x10, and one response variable y. Which plot below would you use to visually detect heteroskedasticity? Assume you do not know which predictor(s) exhibit(s) heteroskedasticity with y. (a) Q-Q Plot (b) Spread-and-Level Plot (c) Plot of the regression residuals vs. x1 (d) Plot of x1 vs. x10

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