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[求助] 评审意见中有一条是要求对PCA分析阐述更多的原理性内容,求教专业人士!

Principal component analysis (PCA): The method of PCA was not described. Which method the authors were used for PCA, orthogonal rotation (quartimax, varimax, or equimax) or oblique rotation? The authors obtained two principal components. Was this verified by the scree test? Please read the manual of SPSS regarding PCA, and describe this exploratory data analysis in more detail.

这是评审专家提出的问题的原话,求教如何回答。。。本人只会直接用SPSS作分析,其中的一些检验的原理不是很清楚。
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