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I'm not sure if there is a question here.
But this pdf has some useful info,
http://www.stat.lsu.edu/faculty/mose...37/mvnprop.pdf
and you need to start with normality to get the marginals and conditional distributions to be normal.
I have learned that the conditional distribution of X1, given that X2 = x2 is normal and has covariance = ∑11 - ∑12 (∑22 )^-1∑21
However, I realized that I was using the fact without knowing why?
How does covariance become like that? I was trying to figure it out from book and internet sources but I couldn't figure it out.
Can anyone help me?
I'm not sure if there is a question here.
But this pdf has some useful info,
http://www.stat.lsu.edu/faculty/mose...37/mvnprop.pdf
and you need to start with normality to get the marginals and conditional distributions to be normal.
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