biased sample

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biased sample

[bī′əst]
Etymology: OFr, biais, slant; L, exemplum, sample
(in research) a sample of a group in which all factors or participants are not equally balanced or objectively represented.

biased sample

A subset of a population that does not represent—either intentionally or unintentionally—an entire population.

biased sample

In epidemiology or medical research, a sample of a group that does not equally represent the members of the group.
See also: sample