How do I calculate the expected value and variance of cosine?

how do I

Ryan S asked:

How do I calculate the expectation and variance for the function

Y = Acos(wt) + c where A has mean M and variance sigma^2 ?

Breaking it apart, I’ve found that E[Y] = E[Acos(wt)] + c using linearity, but I don’t know how to evaluate E[Acos(wt)].

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1 comment to How do I calculate the expected value and variance of cosine?

Nunu -

September 9th, 2008 at 6:38 pm

use Cos on the calculator..

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