It is well known that immigrants are self-selected group of individuals and this is represented by the large size of variance of the unobserved characteristics.
The variance ratio test as proposed by Lo and Mackinlay (1989) tests the existence or nonexistence of a significant difference in the size of variance of two or more variables.
If, however, recruitment unit costs are large, both the allocation and size of the optimal strategy is highly sensitive to the size of variance components, especially if recruitment costs accelerate with the number of subjects (α>1).
The x-axis denotes reactions numbers and y-axis denotes the size of variance components Within the sphingosine species, the highest variance similarly to CER species falls to the mitochondrial Sph, whereas contrary to the mitochondrial CER for the mitochondrial Sph, all reactions' noise components are near to average.
Several landscape metrics were chosen to describe the landscape pattern (spatial share, mean patch size, patch size coefficient of variance, mean shape index, mean nearest neighbor distance, mean proximity index, and interspersion and juxtaposition index).
As a measure of within-species variability in FID in rural habitats, we used the coefficient of variation (CVFID) instead of the variance because, contrary to this measure, CV was not related to body size (Regression of variance against body size: R2 = 0.25, n = 42, P = 0.0015; Regression of CVFID against body size: R2 = 0.003, n = 42, P = 0.93).
Even for the most strongly bottlenecked population, the standard error for the third-order interaction variance is nearly 15% of the phenotypic variance, comparable to the size of the variance component.
In addition, analysis of molecular variance (AMOVA) was used to compare the size of molecular variance in wild and cultivated longan germplasm.
Nonparametric statistics were conducted for the rest of the analyses due to the unequal sample sizes and heterogeneity of variance among the outcome measures.
It is generally accepted that, for small sample sizes, traditional estimation of variance can be inaccurate and therefore needs a stabilizing correction.
