1 resultado para Alternatives
em Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP)
Filtro por publicador
- JISC Information Environment Repository (1)
- Repository Napier (1)
- University of Cagliari UniCA Eprints (1)
- Aberystwyth University Repository - Reino Unido (2)
- Aquatic Commons (22)
- Archive of European Integration (10)
- Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (66)
- Aston University Research Archive (4)
- B-Digital - Universidade Fernando Pessoa - Portugal (3)
- Biblioteca Digital da Câmara dos Deputados (2)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (2)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (1)
- Biblioteca Digital de la Universidad Católica Argentina (2)
- Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (57)
- BORIS: Bern Open Repository and Information System - Berna - Suiça (20)
- Boston University Digital Common (7)
- Bucknell University Digital Commons - Pensilvania - USA (1)
- Bulgarian Digital Mathematics Library at IMI-BAS (1)
- CaltechTHESIS (7)
- Cambridge University Engineering Department Publications Database (34)
- CentAUR: Central Archive University of Reading - UK (15)
- Chinese Academy of Sciences Institutional Repositories Grid Portal (9)
- Comissão Econômica para a América Latina e o Caribe (CEPAL) (16)
- CORA - Cork Open Research Archive - University College Cork - Ireland (14)
- Cornell: DigitalCommons@ILR (1)
- Corvinus Research Archive - The institutional repository for the Corvinus University of Budapest (2)
- DI-fusion - The institutional repository of Université Libre de Bruxelles (3)
- Digital Commons at Florida International University (4)
- Digital Peer Publishing (1)
- Digital Repository at Iowa State University (1)
- DigitalCommons@The Texas Medical Center (1)
- DigitalCommons@University of Nebraska - Lincoln (1)
- DRUM (Digital Repository at the University of Maryland) (2)
- Duke University (5)
- Ecology and Society (1)
- eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (17)
- FAUBA DIGITAL: Repositorio institucional científico y académico de la Facultad de Agronomia de la Universidad de Buenos Aires (4)
- Greenwich Academic Literature Archive - UK (9)
- Helda - Digital Repository of University of Helsinki (32)
- Indian Institute of Science - Bangalore - Índia (53)
- Instituto Politécnico do Porto, Portugal (10)
- Iowa Publications Online (IPO) - State Library, State of Iowa (Iowa), United States (2)
- Massachusetts Institute of Technology (4)
- Memorial University Research Repository (1)
- Ministerio de Cultura, Spain (9)
- National Center for Biotechnology Information - NCBI (4)
- Plymouth Marine Science Electronic Archive (PlyMSEA) (5)
- Portal de Revistas Científicas Complutenses - Espanha (6)
- QSpace: Queen's University - Canada (1)
- QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (83)
- Queensland University of Technology - ePrints Archive (221)
- Repositório Científico do Instituto Politécnico de Lisboa - Portugal (14)
- Repositório Científico do Instituto Politécnico de Santarém - Portugal (1)
- Repositório digital da Fundação Getúlio Vargas - FGV (3)
- Repositório Institucional da Universidade de Aveiro - Portugal (14)
- Repositório Institucional da Universidade Federal de São Paulo - UNIFESP (1)
- Repositorio Institucional de la Universidad Pública de Navarra - Espanha (1)
- Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (10)
- Research Open Access Repository of the University of East London. (3)
- RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (2)
- SAPIENTIA - Universidade do Algarve - Portugal (4)
- Savoirs UdeS : plateforme de diffusion de la production intellectuelle de l’Université de Sherbrooke - Canada (3)
- Universidad de Alicante (1)
- Universidad del Rosario, Colombia (3)
- Universidad Politécnica de Madrid (6)
- Universidade Complutense de Madrid (1)
- Universidade de Lisboa - Repositório Aberto (7)
- Universidade dos Açores - Portugal (1)
- Universitat de Girona, Spain (1)
- Universitätsbibliothek Kassel, Universität Kassel, Germany (3)
- Université de Montréal (1)
- Université de Montréal, Canada (12)
- University of Michigan (77)
- University of Queensland eSpace - Australia (8)
- University of Washington (3)
- WestminsterResearch - UK (5)
Resumo:
The usual tests to compare variances and means (e. g. Bartlett`s test and F-test) assume that the sample comes from a normal distribution. In addition, the test for equality of means requires the assumption of homogeneity of variances. In some situation those assumptions are not satisfied, hence we may face problems like excessive size and low power. In this paper, we describe two tests, namely the Levene`s test for equality of variances, which is robust under nonnormality; and the Brown and Forsythe`s test for equality of means. We also present some modifications of the Levene`s test and Brown and Forsythe`s test, proposed by different authors. We analyzed and applied one modified form of Brown and Forsythe`s test to a real data set. This test is a robust alternative under nonnormality, heteroscedasticity and also when the data set has influential observations. The equality of variance can be well tested by Levene`s test with centering at the sample median.