A Comparison of Principal Components from Real and Random Data

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dc.contributorVirginia Techen
dc.contributor.authorStauffer, Dean F.en
dc.contributor.authorGarton, E. O.en
dc.contributor.authorSteinhorst, R. K.en
dc.contributor.departmentFish and Wildlife Conservationen
dc.date.accessed2014-03-11en
dc.date.accessioned2014-03-27T13:06:03Zen
dc.date.available2014-03-27T13:06:03Zen
dc.date.issued1985en
dc.description.abstractWe compared principal components derived from sets of real data with dimensions of 120 x 7, 120 x 4, 150 x 11, 150 x 8, 150 x 5, 454 x 12, 454 x 8, and 454 x 5, to those from sets of randomly generated data of corresponding size. Principal components from subsets of 25, 50, 75, and 100 observations from the 120- and 150-observation data sets and those from subsets of 25, 50, 75, 100, 150, 200, 300, and 400 observations from the 454-observation data sets were compared. Percent variance association with components from real data was relatively constant over all sample sizes; percent variance decreased with larger samples of random data. A bootstrap method was used to develop standard error estimates on percent variance and percent of remaining variance associated with components from real data. Percent of remaining variance associated with the first four components from real data was significantly higher than analogous components from random data.en
dc.description.sponsorshipUser Services at the University of Idahoen
dc.description.sponsorshipVirginia Polytechnic Institute and State Universityen
dc.identifier.citationDean F. Stauffer, Edward O. Garton, and R. Kirk Steinhorst 1985. A Comparison of Principal Components from Real and Random Data. Ecology 66:1693-1698. http://dx.doi.org/10.2307/2937364en
dc.identifier.doihttps://doi.org/10.2307/2937364en
dc.identifier.issn0012-9658en
dc.identifier.urihttp://hdl.handle.net/10919/46835en
dc.identifier.urlhttp://www.jstor.org/stable/2937364en
dc.language.isoen_USen
dc.publisherEcological Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectbootstrapen
dc.subjectconfidence intervalsen
dc.subjectprincipal components analysisen
dc.subjectrandom dataen
dc.subjectsignificance testsen
dc.subjectstandard error estimatesen
dc.titleA Comparison of Principal Components from Real and Random Dataen
dc.title.serialEcologyen
dc.typeArticle - Refereeden

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