Are there minimum numbers of variables and observations in Principal Component Analysis (PCA)?

08 August 2017 1 3K Report

It is understood that PCA can be used to combine/reduce rather large numbers of related variables into a few independent (orthogonal) factors for statistical analysis and interpretation. Yet, are there any recommendations/requirements regarding the minimum number of variables and/or observations (samples) in PCA?

Zenon Gniazdowski

My suggestion: https://www.researchgate.net/publication/319469038_New_Interpretation_of_Principal_Components_Analysis

Article New Interpretation of Principal Components Analysis

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