Hi all,
   Assume I have a random vector with four variables, i.e. A=(a,b,c,d). I am able to get the covariance matrix of vector A, but how can I get the covariance matrix of vector B=(a,c,b,d) by manipulating the corresponding covariance matrix of A? Thanks.

Sincerely,
Yanwei Zhang
Department of Actuarial Research and Modeling
Munich Re America
Tel: 609-275-2176
Email: yzhang@munichreamerica.com<mailto:yzhang@munichreamerica.com>


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