Table 1 shows permeability data and similar depths and Table 2 shows division of permeability data into three zones for well A. Equations (2)–(4) are used for calculation of variance between zones, variance in each zone, and zonation coefficient, respectively.
Standard results for the calculation of variance estimates and corrected degrees of freedom using multiple imputations (Little and Rubin 2002) apply directly to analyses using PVs.
However, the calculation of variance components for fixed and random effects would be identical, despite this difference in interpretation [18], [19].
At the third step, in a sensitivity analysis we built up a Poisson regression model without an option for robust calculation of variance, predictive of lingering RMSP with the same covariates to better assess the incidence risk ratio (IRR) of the most pejorative outcome with recovery as reference.
The methodology also permits easy calculation of posterior intervals, whereas the calculation of variances for posterior probability estimates from multilevel logistic models in a frequentist setting would have been enormously difficult.
The percentage of the variance contributed by each source of variation for ethanol yield was estimated by calculation of variance components (Table 2).
In contrast, for either vanishing γ R or γ B all contributions decrease, consistent with calculations for the variance of the receptor activity in Methods.
12 In order to extend beyond estimation of the mean and make formal inferences, both the Lin 1997 and Bang-Tsiatis methods allow for the calculation of variances.
If more than one depression or alcohol outcome measure was reported in a single study, we averaged the effect sizes from those measures to produce a single summary effect size for use in the meta-analysis, adjusting those calculations statistically to account for variance introduced by the multiple measures 40.
For this calculation, the variance that gives the highest sample size i.e. 3 was taken from the above study.
