I'm having a bit of trouble just starting a question, which I've attached.

The answer is E(yt) = 0 but how do you go about working that from the information given?

Any tips to point me in the right direction?

Thanks for the help

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- May 10th 2010, 12:44 AMblueturkeyExpected Value and Variance
I'm having a bit of trouble just starting a question, which I've attached.

The answer is E(yt) = 0 but how do you go about working that from the information given?

Any tips to point me in the right direction?

Thanks for the help - May 10th 2010, 02:19 AMCaptainBlack
- May 10th 2010, 03:43 AMblueturkey
Thanks for your reply

Does this mean that I should assume,

E(et) = E(et-1) = E(et-2) = 0

but what is the basis of assuming this?

Alternatively, I'm guessing that this may have something to do with the statement E(etet+tau) = 0, although I'm not sure what this statement means either. - May 10th 2010, 05:24 AMCaptainBlack