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Abstract This paper discusses, in terms of correlations, the relation between coefficients of the characteristic vectors used in principal component analysis, both within each vector and among vectors. These relationships will be illllstrated with examples (1) where the variates represent a battery of physical tests related to rocket testing and (2) where they represent equally spaced observations on a continuous curve, a case related to film measurements. KEY WORDS: Principal ComponentsCharacteristic Roots and VectorsIldtivariate Analysis
Jackson et al. (Wed,) studied this question.