How to generate covariance matrix (SIGMA) for mvnrnd function, given the marginal normal probability density functions of two random variables X and Y.
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Hi,
I want to generate random samples of two correlated random variables with normal probability distribution functions (PDFs). I am using "mvnrnd" function for this purpose i.e. mvnrnd(MU,SIGMA,n). I know that MU is the 2x1 matrix of mean values of distribution of X and Y. n is the number of samples required. But I could not find a method to generate the SIGMA matrix. I checked examples of mvnrnd, but they all assume a SIGMA without any explanation. Any help will be much appreciated.
Thanks
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