# Question

Refer to Exercise 13.54.

a. Is there a strong correlation between any of the pairs of explanatory variables? What problems may result if several of the explanatory variables are highly correlated?

b. Evaluate whether the conditions of normality and equal variance hold for your model in Exercise 13.54.

a. Is there a strong correlation between any of the pairs of explanatory variables? What problems may result if several of the explanatory variables are highly correlated?

b. Evaluate whether the conditions of normality and equal variance hold for your model in Exercise 13.54.

## Answer to relevant Questions

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