Re: Dse 2012

Posted by Erika on May 30, 2013; 6:18am
URL: http://discussion-forum.276.s1.nabble.com/Dse-2012-tp7581459p7581492.html

for Q 31, How do we prove option a. and c. to be true?

non math ans for a. would do.
But for c., the formula for MSE otherwise(with intercept) is sum of (y-y bar )^2 / n. Using n-1 here ..why?

Also, for proving d. false, I wish to confirm:

We need Beta1 cap here...which equals sum of [(Xi-Xbar)(Yi-Ybar)/ sum of (Xi-Xbar)^2.
Thus the given formula is wrong. correct?