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1 December 2006 On the evaluation of ordinal data with conventional multivariate procedures
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Abstract
In a recent Forum paper, it is argued that, in most studies, ordinal data such as the Braun-Blanquet abundance/dominance scale are not properly treated by multivariate methods. This is because conventional multivariate methods are generally adequate for ratio-scale variables only, while for ordinal variables differences between states and their ratios are not interpreted. Conversely, in this paper it is shown that using conventional multivariate procedures for evaluating ordinal data should imply a shift from a metric space to a topological data space; as such the use of ordinal data does not represent a serious methodological error, provided that results are interpreted accordingly.
Carlo Ricotta and Giancarlo Avena "On the evaluation of ordinal data with conventional multivariate procedures," Journal of Vegetation Science 17(6), (1 December 2006). https://doi.org/10.1658/1100-9233(2006)17[839:OTEOOD]2.0.CO;2
Received: 29 March 2006; Accepted: 3 October 2006; Published: 1 December 2006
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