Iwanttomakesurethatmyunderstandingofthedifferencebetweenestimatorandexpectationisright.
Expectationisthetruemeanaswedrawagreatnumberofrandomsampletofigureitout.
While,theestimatorisameanaswell,butitisnotatruemeanasthenotsufficientnumberofrandomsampleIhaveframed.
这英文是我自己的,我懒得换成中文。