Definition of Observer variation
Observer variation: Failure by the observer in a study or test to measure accurately, resulting in error. Inter-observer variation is the amount of variation between the results obtained by two or more observers examining the same material. Intra-observer variation is the amount of variation one observer experiences when observing the same material more than once.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=8056
Last Editorial Review: 3/19/2012
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