Question: Consider the Hald cement data in Table B.21. a. From the matrix of correlations between the regressors, would you suspect that multicollinearity is present? b.

Consider the Hald cement data in Table B.21.

a. From the matrix of correlations between the regressors, would you suspect that multicollinearity is present?

b. Calculate the variance infl ation factors.

c. Find the eigenvalues of X ′ X .

d. Find the condition number of X ′ X .

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