selection bias
selection of individuals, groups or data for analysis such that proper randomization is not achieved
Patagonia picnic table effect
Phenomenon in birdwatcing
sampling bias
bias in which a sample is collected in such a way that some members of the intended population are less likely to be included than others
length time bias
medical statistics term
survivorship bias
logical error of concentrating on the people or things that made it past some selection process and overlooking those that did not, typically because of the latter's lack of visibility
failure bias
logical error of concentrating on the people or things that failed to make it past some selection process and overlooking those that did, typically because of their lack of visibility.