Investigation of the robustness of the student's t-test under the violation of the assumption of equality of variances

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Author
Hadd, Harry Alben, Jr.
Date
1970-12Advisor
Tuck, Gary A.
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The robustness of the Student's t -test is investigated under the violation of the assumption of equality of variances. With the aid of computer simulation, Type I and Type II error rates and the resulting statistical inference are studied and the effects of unequal variances on rejection rates and the power of the test are determined. Limits are
determined on the degree of violation of the equality of variances that still leads to a
satisfactory result when Student's distribution is used.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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