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An Extension of the Rulon Formula for Test Reliability: The Case of Correlated True and Error Components of Scores

Richard H. Williams and Donald W. Zimmerman
The Journal of Experimental Education
Vol. 36, No. 3 (Spring, 1968), pp. 94-96
Published by: Taylor & Francis, Ltd.
Stable URL: http://www.jstor.org/stable/20156978
Page Count: 3
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An Extension of the Rulon Formula for Test Reliability: The Case of Correlated True and Error Components of Scores
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