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Educational and Psychological Measurement
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An SAS Program for Estimating a Mixture of Two Normal Regressions

Steven B. Caudill

Auburn University, scaudill{at}business.auburn.edu

Ram N. Acharya

Arizona State University East

This article presents an SAS program for estimating a mixture of two normal linear regression models. The program is an EM algorithm and is written in the IML language in SAS. The usefulness of the algorithm is demonstrated by using an education example.

Educational and Psychological Measurement, Vol. 58, No. 5, 846-852 (1998)
DOI: 10.1177/0013164498058005011
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