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- Title
Scales and Statistics.
- Authors
Gardner, Paul Leslie
- Abstract
This article reviews the research on the nature of the relationship between ordinal and interval scales, and parametric and nonparametric statistics. The arguments presented in this review can be summarized in a few sentences: (1) Questions about the interpretation of measurements and questions about the validity of statistical procedures lie in distinct domains. (2) The distinction between ordinal and interval scales is not sharp. (3) Some of the arguments underlying the assertion that parametric procedures require interval strength statistics appear to be doubtful validity. (4) Parametric procedures are robust and yield valid conclusions even when mildly distorted data are fed into them. (5) For some kinds of research design, parametric procedures retain a number of important experimental benefits.
- Subjects
EDUCATIONAL tests &; measurements; EDUCATION statistics; EDUCATION research; MATHEMATICAL statistics; TEST interpretation; STATISTICS
- Publication
Review of Educational Research, 1975, Vol 45, Issue 1, p43
- ISSN
0034-6543
- Publication type
Article
- DOI
10.3102/00346543045001043