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What percentage of the total variation is explained

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Reference no: EM131026645

Suppose that the random variables X1, X2 and X3 have the covariance matrix...

(i) Determine the three PC's based on ∑.

(ii) What percentage of the total variation is explained by each of the PC's

(iii) Calculate the correlation coefficients between the first PC and each of the variables X1, X2 and X3.

(iv) What are the PC's and their corresponding variances based in the respective covariance matrices for the sub-vectors

a) (X1, X2)T, and

b) (X1, X3)T?

Attachment:- multivariate.zip

Reference no: EM131026645

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