| The study of the evaluation of the undergraduates based on their examination records is very important in educational work.In this thesis,soomelatent variable which affect the examination records are concluded by the mean of factor analysis.The courses they taken can be divided into several parts based on the latent variables.and the results are reasonable.The EM algorithm and MCMC (Monte Carlo Markov chain) method are implemented and studied in the factor analysis.some useful results are concluded.
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