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Line 33: the hat matrix can be used to define the [[degrees of freedom (statistics)#Effective degrees of freedom\|effective degrees of freedom]] of the model. Some other properties of the hat matrix are summarized in <ref>Gans, P. ~~Gans,~~(1992) ''Data Fitting in the Chemical Sciences,'', Wiley~~, 1992~~. ISBN 978-0-471-93412-7</ref>. ==Correlated residuals==

Projection matrix: Difference between revisions