한국해양대학교

Detailed Information

Metadata Downloads

비모수검정의 비교연구 및 특정 분포에 대한 검정력 분석

Title
비모수검정의 비교연구 및 특정 분포에 대한 검정력 분석
Alternative Title
A comparative study of nonparametric tests and analysis of powers about specific distributions
Author(s)
신성민
Publication Year
2008
Publisher
한국해양대학교 대학원
URI
http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002175099
http://repository.kmou.ac.kr/handle/2014.oak/9256
Abstract
The Mann-Whitney test and the median test are two tests that can be used to test for a difference in location parameters. This paper compared powers of the two tests under a variety of population distributions through a simulation study. Both tests require that two underlying populations have the same variance, but this assumption was relaxed in some of the comparisons. In every case, equal sizes of 10 and 20 were used.

The Mann-Whitney test was found to be more powerful than the median test. It had the largest power when the underlying distributions were log-normal, beta, gamma, and chi-square for both sample sizes. The powers of the two tests were about the same for sample sizes of 10 and 20 from the mixture population 80% N(0,1) and 20% N(2,25) and for sample sizes of 10 from the mixture population 95% N(0,1) and 5% N(30,91). When the equal variance assumption was relaxed, the median test was found be more conservative than the Mann-Whitney test.
Appears in Collections:
응용과학과 > Thesis
Files in This Item:
000002175099.pdf Download

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse