Consider the following four covariance matrices that apply to clusters having four responses per cluster: P Q

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Consider the following four covariance matrices that apply to clusters having four responses per cluster:
P

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Q
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R
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S
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a. Which of the above matrices are heterogeneous (as compared to homogeneous) covariance matrices?
b. What is the correlation structure defined by each of the above matrices?
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Applied Regression Analysis And Other Multivariable Methods

ISBN: 632

5th Edition

Authors: David G. Kleinbaum, Lawrence L. Kupper, Azhar Nizam, Eli S. Rosenberg

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