Uncertainty may be due to sampling variation in cost and outcome data and non-sampling variation related to the economic model and the evaluation process [ 64].
In some cases, few observations of certain species may be due to sampling bias, as small, solitary, cryptobenthic species are often overlooked in visual surveys.
Some of the differences in abundances may be due to sampling in sediments by Pei et al. [57] rather than in water, as in the current study.
Alternatively, this may be due to sampling bias in the microbial metagenome as phage were not specifically enriched at t0, contrary to the t7 sample.
Variation among bands or villages within an ethnic group could be due to sampling.
This should be due to sampling variances or the fact that they were recent evolution events.
This result could be due to sampling bias because only 49% of the respondents reported their gender in our study.
This finding could be due to sampling bias because approximately 92.5% of CSs were done on an emergence basis.
As many of these species are well known and common, the complete lack of hybrids among basal Heliconiina seems unlikely to be due to sampling bias.
Because of low allele frequencies, some of the highly favorable associations with minor alleles could be due to sampling rather than biological effects.
This may be due to sampling bias, since sampling in other countries, where the infection was acquired, might not be as substantial.
