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ERIC Number: ED061296
Record Type: RIE
Publication Date: 1971-Jun
Pages: 13
Abstractor: N/A
Reference Count: 0
Review of Problems of Testing for Homogeneity Prior to Running an ANOVA.
Proper, Elizabeth C.
Texts often suggest running preliminary tests for homogeneity of variance prior to running an ANOVA. While it has been known for some time that most of the suggested tests are probably not appropriate, they are still being used. This paper is a review of the literature in terms of the implications involved in running preliminary tests in general and various ones in particular: Cochran, Hartley, Box and Andersen, Bartlett, Levene. It re-emphasizes the need to attain equal cell sizes and suggests the appropriateness of the Welch test when that is not possible. The paper looks at the difference in assumptions which must be met in the fixed and random effects models, in a one-way design. (Author)
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: N/A
Identifiers: N/A
Note: Paper presented at the Annual Conference of the New England Educational Research Organization, Chestnut Hill, Massachusetts, June 1971