Editing Coefficient of variation (section)

=== As a measure of standardisation of archaeological artefacts ===

Archaeologists often use CV values to compare the degree of standardisation of ancient artefacts.<ref>{{cite journal |last1=Eerkens |first1=Jelmer W. |last2=Bettinger |first2=Robert L. |title=Techniques for Assessing Standardization in Artifact Assemblages: Can We Scale Material Variability? |journal=American Antiquity |date=July 2001 |volume=66 |issue=3 |pages=493–504 |doi=10.2307/2694247|jstor=2694247 |s2cid=163507589 }}</ref><ref>{{cite journal |last1=Roux |first1=Valentine |title=Ceramic Standardization and Intensity of Production: Quantifying Degrees of Specialization |journal=American Antiquity |date=2003 |volume=68 |issue=4 |pages=768–782 |doi=10.2307/3557072 |jstor=3557072 |s2cid=147444325 |url=http://doi.org/10.2307/3557072 |language=en |issn=0002-7316}}</ref> Variation in CVs has been interpreted to indicate different cultural transmission contexts for the adoption of new technologies.<ref>{{cite journal |last1=Bettinger |first1=Robert L. |last2=Eerkens |first2=Jelmer |title=Point Typologies, Cultural Transmission, and the Spread of Bow-and-Arrow Technology in the Prehistoric Great Basin |journal=American Antiquity |date=April 1999 |volume=64 |issue=2 |pages=231–242 |doi=10.2307/2694276|jstor=2694276 |s2cid=163198451 }}</ref> Coefficients of variation have also been used to investigate pottery standardisation relating to changes in social organisation.<ref>{{cite journal |last1=Wang |first1=Li-Ying |last2=Marwick |first2=Ben |title=Standardization of ceramic shape: A case study of Iron Age pottery from northeastern Taiwan |journal=Journal of Archaeological Science: Reports |date=October 2020 |volume=33 |pages=102554 |doi=10.1016/j.jasrep.2020.102554|bibcode=2020JArSR..33j2554W |s2cid=224904703 |url=http://osf.io/q8hn9/ }}</ref> Archaeologists also use several methods for comparing CV values, for example the modified signed-likelihood ratio (MSLR) test for equality of CVs.<ref>{{cite journal |last1=Krishnamoorthy |first1=K. |last2=Lee |first2=Meesook |title=Improved tests for the equality of normal coefficients of variation |journal=Computational Statistics |date=February 2014 |volume=29 |issue=1–2 |pages=215–232 |doi=10.1007/s00180-013-0445-2|s2cid=120898013 }}</ref><ref>{{cite book |last1=Marwick |first1=Ben |last2=Krishnamoorthy |first2=K |title=cvequality: Tests for the equality of coefficients of variation from multiple groups |date=2019 |publisher=R package version 0.2.0. |url=https://cran.r-project.org/package=cvequality}}</ref>