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Related link : Factor Analysis Explanation Page
Factor Analysis Using Raw Data
Factor Analysis Using Matrix
Data Entry for using Raw Data The data is a matrix of numbers with multiple columns - Each row a subject - Each column a variable - Each cell the value of that variable (col) for that subject(row)
Data Entry for using Matrix The data is a symmetrical matrix (rows=columns) - The matrix can be a covariance or a correlation matrix
Press WH, Flannery VP, Teukolsky SA, Vetterling WT (1989). Numerical Recipes in Pascal. Cambridge University Press IBSN 0-521-37516-9 p.395-396 and p.402-404. Jacobi method for finding Eigen values and Eigen vectors