"Type I Error Rates Of Four Methods For Analyzing Data Collected In A Groups vs Indivi . . ." by Stephanie Wehry and James Algina
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Abstract

Using previous work on the Behrens-Fisher problem, two approximate degrees of freedom tests, that can be used when one treatment is individually administered and one is administered to groups, were developed. Type I error rates are presented for these tests, an additional approximate degrees of freedom test developed by Myers, Dicecco, and Lorch (1981), and a mixed model test. The results indicate that the test that best controls the Type I error rate depends on the number of groups in the group-administered treatment. The mixed model test should be avoided.

DOI

10.22237/jmasm/1067645580

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