Accession Number : AD0715562

Title :   Investigation of the Robustness of the Student's t-Test Under the Violation of the Assumption of Equality of Variance.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Hadd,Harry Alben , Jr

Report Date : DEC 1970

Pagination or Media Count : 69

Abstract : 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 1 and Type 2 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. (Author)

Descriptors :   (*STATISTICAL TESTS, POWER), STATISTICAL DISTRIBUTIONS, ANALYSIS OF VARIANCE, COMPUTER PROGRAMS, SIMULATION, SAMPLING, THESES

Subject Categories : Statistics and Probability

Distribution Statement : APPROVED FOR PUBLIC RELEASE