Factor analysis storage
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To store loadings, factor coefficients, or factor scores, enter a column name or column number for each factor that has been extracted. The number of storage columns specified must be equal in number to the number of factors calculated. If a rotation was specified, Minitab stores the values for the rotated solution. Minitab calculates factor scores by multiplying factor score coefficients and your data after they have been centered by subtracting means.

You can also store the rotation matrix and residual matrix. Enter a matrix name or matrix number. The rotation matrix is the matrix used to rotate the initial loadings. If L is the matrix of initial loadings and M is the rotation matrix that you store, LM is the matrix of rotated loadings. The residual matrix is (A-LL), where A is the correlation or covariance matrix and L is a matrix of loadings. The residual matrix is the same for initial and rotated solutions.

You can also store the eigenvalues and eigenvectors of the correlation or covariance matrix (depending on which is factored) if you chose the initial factor extraction via principal components. Enter a single column name or number for storing eigenvalues, which are stored from largest to smallest. Enter a matrix name or number to store the eigenvectors in an order corresponding to the sorted eigenvalues.