In an earlier paragraph, we describer the tendency of our RDD to produce a biased sample
that included only internet users.
The Publish or Perish Fallacy is: When you need a paper, and academics always need papers, do a survey, call the questionnaire an "instrument," then apply an unnecessarily complicated, opaque, sui generis, unreplicable statistical procedure to a trivially small, biased sample
, but be sure the "findings" accord with received wisdom.
We design an empirical experiment to evaluate and compare the estimation performance of PRIDIT-FRE and the count estimation in the presence of a biased sample
using the Spanish and U.
If sample is collected in such a way that some members of the study population have less chance of being included than others, then the resulting sample is a biased sample
, and the results obtained from such a sample will not be valid or generalizable to the entire study population.
Any particular capture method may, however, give a biased sample
due to differences in capture probability among size, age or sex classes, and may be influenced by body condition, suggesting that a sampling protocol should combine different sampling methods (Conroy & Nichols 1996, Greenwood 1996, Laves & Loeb 2006).
A re-analysis of results addressed the fact that the researchers had selected a biased sample
of supernovae, favouring intrinsically brighter objects.
Unfortunately 127 participants were excluded and, therefore, results were based on a potentially biased sample
Their concern about a biased sample
selection is equally unfounded.
But the commission examined a biased sample