Hey guys,
What is a zero mean error in statistics?
Hope this is enough information? I think it's a basic question though :).
Hey guys, What is a zero mean error in statistics? Hope this is enough information? I think it's a basic question though :). 

closed as offtopic by quid, Alexey Ustinov, András Bátkai, Lucia, Stefan Kohl Nov 22 '15 at 16:52This question appears to be offtopic. The users who voted to close gave this specific reason:



The error is the difference between the estimate $\hat \theta$ and the true value of the statistic $\theta$. Meanzero error means $E[\hat \theta  \theta] = 0$, i.e. $\hat \theta$ is an unbiased estimator of $\theta$. 

