Chance factors or systemic sampling factors

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Wikipedia states that 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[1] of a population (or non-human factors) in which all individuals, or instances, were not equally likely to have been selected.[2] If this is not accounted for, results can be erroneously attributed to the phenomenon under study rather than to the method of sampling. Will biased sampling always lead to a wrong conclusion? Is biased sampling due to chance factors or systemic sampling factors?

Reference no: EM131115559

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