Abstract
In some cases, a correlation matrix may be singular because of the multicollinearity in data, and it may become non-Gramian because of computational inac curacies. In such cases, popular methods of factor ex traction, such as maximum likelihood factor analysis, image factor analysis, and canonical factor analysis, cannot be used because of computational difficulties. This article provides a simple heuristic procedure for converting such a matrix into a proper matrix, so that maximum likelihood factor analysis may be per formed.
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