Fuzzy data treated as functional data: A one-way ANOVA test approach

Gil González-Rodríguez, Ana Colubi and María Ángeles Gil

Computational Statistics & Data Analysis, 2012, vol. 56, issue 4, 943-955

Abstract: The use of the fuzzy scale of measurement to describe an important number of observations from real-life attributes or variables is first explored. In contrast to other well-known scales (like nominal or ordinal), a wide class of statistical measures and techniques can be properly applied to analyze fuzzy data. This fact is connected with the possibility of identifying the scale with a special subset of a functional Hilbert space. The identification can be used to develop methods for the statistical analysis of fuzzy data by considering techniques in functional data analysis and vice versa. In this respect, an approach to the FANOVA test is presented and analyzed, and it is later particularized to deal with fuzzy data. The proposed approaches are illustrated by means of a real-life case study.

Keywords: Functional data; Fuzzy data; k-samples test; ANOVA statistic; Hilbert space; Convex cone; Bootstrap; Local alternatives (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (18)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:csdana:v:56:y:2012:i:4:p:943-955

DOI: 10.1016/j.csda.2010.06.013

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