Sentence examples for bias in sample from inspiring English sources

Moreover we will take into account the possible existence of bias in sample selection, by means of the two-stage Heckman (1979) correction.

He also accuses Hsiang's team of "severe bias in sample selection" and says that his analysis of the same data did not support the climate-conflict link.

A set of rules of thumb on sampling design and survey operations suggested by the United Nations (2008) was also followed in the survey in order to avoid bias in sample selection and data collection, respectively.

The retrospective analysis used in the present study entails a risk of bias in sample selection.

Even with this bias in sample selection we were still able to correctly analyze 154 of the 155 samples.

All specimens (cases and controls) were processed in triplicate and in parallel, using the same lot of reagents and columns, to minimize variability or bias in sample preparation.

Sometimes, for example, the bias in sampling can be more subtle, rendering what we thought was an experiment to actually be an observational study.

This potential bias in sampling may, in turn, limit the ability to predict the homogeneity of the finished dosage form.

Spatial bias in sampling, as can be observed for the bank vole data, if considering the entire German territory, should in particular be avoided, and a sampling accounting for the distribution of environmental variables of interest, should be considered63.

The carbon isotope curves show a large amount of vertical 'isotope heterogeneity' reflected by meteoric diagenesis around hardground surfaces, and these are not always traceable laterally between the closely spaced neritic sections due to bias in sampling.

Spending-driven changes were largest during the Korean War and tend to cause substantial bias in samples that include this period.