Applying geoscience to Australia's most important challenges

Vocabulary Register

Concept

Preferred Labelskos:prefLabel: 2 sigma
URI: https://pid.geoscience.gov.au/def/voc/ga/StatisticalUncertaintyTypes/2Sigma ↗Go to the persistent identifier link
Within Vocab: Geology Rock Properties - Statisitical Uncertainty Type

Preferred Labelskos:prefLabel	2 sigma
Definitionskos:definition	The value corresponding to double the "sample standard deviation" of a set of measurements used to derive a mean value. Used to illustrate the extent of "dispersion" of the measurements from the mean. For data conforming to a normal distribution, 2 sigma encompasses about 95% of the expected values.
See AlsoseeAlso	http://resource.geoscience.gov.au/classifier/ga/uncertaintytype/2sigma
Alternative LabelaltLabel	twice standard deviation
Is Defined ByisDefinedBy	http://resource.geoscience.gov.au/classifier/ga/uncertaintytype/2sigma

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