From: Shin, David <david.shin_at_pearson.com>

Date: Sat 01 Jul 2006 - 15:15:21 EST

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Date: Sat 01 Jul 2006 - 15:15:21 EST

I would like to generate bi-variate normal data given that the first column
of the data is known. for example:

I first generate a set of data using the command,
x <- rmvnorm(10, c(0, 0), matrix(c(1, 0, 0, 1), 2))

then I would like to sum up the two columns of x: x.sum <- apply(x, 1, sum)

now with x.sum I would like to generate another column of data, say y, that makes cbind(x.sum, y) follow a bi-variate normal distribution with mean = c(0, 0) and sigma = matrix(c(1, 0, 0, 1),2)

I will appreciate for all insights.

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