11. Principal component analysis is used to study criteria for determining the number of factors ).12. It has applications to the statistics of principal components analysis and the singular value decomposition. 13. The model used principal component analysis of the Magnetic field observations from the Wilcox Solar Observatory. 14. Principal Component Analysis and general factor of intelligence in humans ( 40-50 % ).15. He also developed and named the principal component analysis method widely used statistics and computer science. 16. Other methods include principal component analysis . 17. This is the result of the negative weights that resulted from the principal component analysis used. 18. These highly multidimensional spaces can be compressed to 2 or 3 dimensions using principal component analysis . 19. First, Principal component analysis was done on full body 2d walkers and point light walkers. 20. These include exploratory factor analysis, principal components analysis ( PCA ), and confirmatory factor analysis.