hi there.(adsbygoogle = window.adsbygoogle || []).push({});

currently looking at the two conditions that must be met for a process to be wide sense stationary.

The first constion is: E[X(t)] = constant

what exactly does this mean??isn't is obvious that any random variable (with fixed time) will always yield a constant expextation. I thought, for stationary prcesses, we want to try and prove that the random variable at DIFFERENT times yields the same expectation value (i.e. constant expactation).

The above condition seems to be stating the obvious...

Thanks

John

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# Expectation of random variable is constant?

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