Testing for the redundancy of variables in principal components analysis
James R. Schott
Statistics & Probability Letters, 1991, vol. 11, issue 6, 495-501
Abstract:
When all of the important principal components have zero coefficients on the same original variables, then those variables are redundant and may be eliminated. Tyler (1981) derived a statistic suitable for testing such a hypothesis. An asymptotic expansion for the mean of this statistic is obtained and used to calculate a Bartlett adjustment factor. The performances of the unadjusted and adjusted statistics are investigated in a simulation.
Keywords: Asymptotic; expansion; Bartlett; adjustment; factor; dimensionality; reduction (search for similar items in EconPapers)
Date: 1991
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