/9 The minimum variance of the unbiased estimate is given by For the continuous case this result can be expressed as N dt UESTC 6The minimum variance of the unbiased estimate is given by For the continuous case this result can be expressed as 6 UESTC ( ) ( ) 2 2 2 1 min k i i s     = =          α ( ) ( ) 2 0 2 0 α , 2 min T N s t dt    =         