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A sample in which the individual units are selected by some purposive method. It is therefore subject to biases of personal selection and for this reason is now rarely advocated in its crude form.

Source Publication:
A Dictionary of Statistical Terms, 5th edition, prepared for the International Statistical Institute by F.H.C. Marriott. Published for the International Statistical Institute by Longman Scientific and Technical.

Cross References:
Judgment sample
Non-probability sampling
Quota sample

Statistical Theme: Methodological information (metadata)

Created on Sunday, May 26, 2002

Last updated on Thursday, February 20, 2003