In statistics, sampling bias is a 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. It results in a biased sample, a non-random sample of a population (or non-human factors) in which all individuals, or instances, were not equally likely to have been selected....
Distortion that occurs when a sample is not representative of the population from which it was drawn
The tendency for a sample to misrepresent its population for reasons not due to chance.
Found where the research sample used does not reflect the target population onto which you later generalise your results.
Type: Term Definitions: 1. systematic error due to study of a nonrandom sample of a population.
A source of error that arises when the sample is not representative of the population that the researcher wants to study.