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French Equivalent: Étendue réelle

A group of observations may contain a limited number of outlying observations at either or both ends of the range. A very rough measure of dispersion may be obtained by taking the “effective” range, i.e. the range after these outlying values have been removed.

The removal may have to be a matter of subjective judgement and inferences based on effective range are of somewhat doubtful value: in fact the term itself is not a good one.

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.

Statistical Theme: Methodological information (metadata)

Created on Sunday, May 19, 2002

Last updated on Thursday, August 11, 2005