In all estimation, variance estimates (Huber-White sandwich variance estimator [ 34]) took account of ward clustering and the lack of independence in observations.
Clearly, it is desirable to provide almost unbiased estimates with estimation variance as small as possible.
We used linear regression with robust estimation variance to estimate the difference in mean birthweight among teenage mother groups compared with adult women.
It is shown that the asymptotic estimation variance of the transfer function estimate is determined entirely by the non-causal part of Φ eiω) and its first few derivatives evaluated at the poles of the system.
The method uses a Bayesian approach to kriging and gives intermittency in the form of a probability map, its estimates providing a realistic assessment of their estimation variance.
An estimation variance, however, is not available for that estimator.
The estimator (5) is biased but exhibits a smaller estimation variance than an unbiased one [9].
However, the blending considerably reduced the estimation variance indicating that uncertainty of the map estimates was a neglected property necessary to detect change and difference in patterns.
Results show that NN provides the estimates with bias smaller than IDW and OK but larger estimation variance.
In order to estimate separate molecular clock parameters for each partition whilst simultaneously minimising estimation variance, we implemented a genomic partition model in BEAST v1.5.4 [ 21].
In this scheme, each variogram estimate γ ^ (i ) is weighted in approximately inverse proportion to its estimation variance (Cressie, 1985 ). iii.
